tag:blogger.com,1999:blog-59804555788847028462024-03-07T23:41:05.205-08:00This Is Why You're WrongThis Is Why You're Wrong is the place to see where frequently-heard arguments fall short and to learn how to rebut them when the need or opportunity arises.<br><br>
I happily accept submissions of arguments you'd like to see destroyed.Peter Kovalskyhttp://www.blogger.com/profile/02427728617984989522noreply@blogger.comBlogger8125tag:blogger.com,1999:blog-5980455578884702846.post-32313630561700821442009-05-05T19:12:00.000-07:002009-05-05T20:44:44.645-07:00Fallacy of the Week #3<span class="Apple-style-span" style="font-size: small;"><span class="Apple-style-span" style="font-family: 'trebuchet ms';">First, perfunctory apologies for the recent hiatus. Now.</span></span><div><span class="Apple-style-span" style="font-family: 'trebuchet ms'; font-size: 13px;"><br /></span></div><div><span class="Apple-style-span" style="font-family: 'trebuchet ms'; font-size: 13px;">The fallacy I'd like to begin with today is called <i><a href="http://en.wikipedia.org/wiki/Ad_hominem">argumentum ad hominem</a></i>. It is a type of <i><a href="http://en.wikipedia.org/wiki/Non_sequitur_(logic)">non sequitur</a></i>, which is an exceedingly broad category of error and which, therefore, comprises many subtypes. You're committing a <i>non sequitur</i> fallacy whenever you make irrelevant or unsubstantiated claims, or when you make excessively large leaps of inference. A few examples of <i>non sequitur</i> errors:</span></div><blockquote><div><span class="Apple-style-span" style="font-family: 'trebuchet ms'; font-size: 13px;">(1) <span class="Apple-style-span" style="font-style: italic; ">Jack: I think we should nationalize the banks.</span></span></div><div><span class="Apple-style-span" style="font-family: 'trebuchet ms'; font-size: 13px;"><span class="Apple-style-span" style="font-style: italic; "> Jim: The moon may or may not be made of cheese.<span class="Apple-style-span" style="font-style: normal; "></span></span></span></div><div><span class="Apple-style-span" style="font-family: 'trebuchet ms'; font-size: 13px;"><br /></span></div><div><span class="Apple-style-span" style="font-family: 'trebuchet ms'; font-size: 13px;"><span class="Apple-style-span" style="font-style: italic; "><span class="Apple-style-span" style="font-style: normal; ">(2) <span class="Apple-style-span" style="font-style: italic; ">If you like yams, you'll probably hate Beethoven.</span></span></span></span></div></blockquote><div><span class="Apple-style-span" style="font-family: 'trebuchet ms'; font-size: 13px;"><span class="Apple-style-span" style="font-style: italic; "><span class="Apple-style-span" style="font-style: normal; "><span class="Apple-style-span" style="font-style: italic; "></span></span></span></span></div><div><span class="Apple-style-span" style="font-family: 'trebuchet ms'; font-size: 13px;"><blockquote><span class="Apple-style-span" style="font-style: italic;"></span></blockquote></span></div><div><span class="Apple-style-span" style="font-family: 'trebuchet ms'; font-size: 13px;">Note that even if the claim you're making is <span class="Apple-style-span" style="font-style: italic;">true </span>(it is <a href="http://en.wikipedia.org/wiki/Tautology">tautologically </a>true to claim that "Object X has or does not have Trait Y"), it can still be irrelevant.</span></div><div><span class="Apple-style-span" style="font-family: 'trebuchet ms'; font-size: 13px;"><br /></span></div><div><span class="Apple-style-span" style="font-family: 'trebuchet ms'; font-size: 13px;">So, back to the <i>ad hominem</i>. Over time, two different kinds of bad arguments have been called <i>ad hominem</i>s:</span></div><blockquote><div><span class="Apple-style-span" style="font-family: 'trebuchet ms'; font-size: 13px;">(1) <span class="Apple-style-span" style="font-style: italic;">In the past, an </span>ad hominem<span class="Apple-style-span" style="font-style: italic;"> argument was one that appealed to the audience's emotions -- their sympathy, pride, compassion, greed, etc. These days, this fallacy is unimaginitively called </span>appeal to emotion<span class="Apple-style-span" style="font-style: italic;">.</span></span></div><div><span class="Apple-style-span" style="font-family: 'trebuchet ms'; font-size: 13px;">(2) <span class="Apple-style-span" style="font-style: italic;">More recently, an </span>ad hominem <span class="Apple-style-span" style="font-style: italic;">argument is one that challenges a source's character and uses that as justification for rejecting that source's claims (i.e., "Jill likes yams, so we shouldn't listen to heropinions on politics").</span></span></div></blockquote><div><span class="Apple-style-span" style="font-family: 'trebuchet ms'; font-size: 13px;"></span></div><div><span class="Apple-style-span" style="font-family: 'trebuchet ms'; font-size: 13px;">As is usually the case with such common "errors," they're so common because they're not always errors. It is sometimes quite reasonable to argue in a way very similar to this. Consider the following: </span></div><blockquote><div><span class="Apple-style-span" style="font-family: 'trebuchet ms'; font-size: 13px;">(1) <span class="Apple-style-span" style="font-style: italic;">Jill</span><span class="Apple-style-span" style="font-style: italic;"> likes yams, so we shouldn't listen to her opinions on politics.</span></span></div><div><span class="Apple-style-span" style="font-family: 'trebuchet ms'; font-size: 13px;">(2) <span class="Apple-style-span" style="font-style: italic;">Jill</span><span class="Apple-style-span" style="font-style: italic;"> likes yams, so we shouldn't listen to her opinions on what to have for dinner.</span></span></div></blockquote><div><span class="Apple-style-span" style="font-family: 'trebuchet ms'; font-size: 13px;"></span></div><div><span class="Apple-style-span" style="font-family: 'trebuchet ms'; font-size: 13px;">Now, (1) is clearly an example of a <i>non sequitur</i> -- there's no reasonable connection between having terrible taste and being qualified to make political decisions. But (2) is <span class="Apple-style-span" style="font-style: italic;">not</span> a <span class="Apple-style-span" style="font-style: italic;">non sequitur</span> -- there <span class="Apple-style-span" style="font-style: italic;">is </span>a reasonable connection between having terrible taste and being qualified to make culinary decisions. Generally speaking, if you attempt <span class="Apple-style-span" style="font-style: italic;">either</span> (1) <span class="Apple-style-span" style="font-style: italic;">or</span> (2), you will probably be called out for using an <span class="Apple-style-span" style="font-style: italic;">ad hominem</span>. If what you tried was (1), then you should probably just hang your head in shame and fall upon your sword. But if what you tried was (2), then you have a defense.</span></div><div><span class="Apple-style-span" style="font-family: 'trebuchet ms'; font-size: 13px;"><br /></span></div><div><span class="Apple-style-span" style="font-family: 'trebuchet ms'; font-size: 13px;">You see, there's a substantive difference between impeaching someone's <span class="Apple-style-span" style="font-style: italic;">character </span>and impeaching their <span class="Apple-style-span" style="font-style: italic;">qualifications</span>. Suppose, for example, that I had written and published a treatise on quantum mechanics, or Sumerian cuneiform, or whatever. You would be wrong to respond, <blockquote><span class="Apple-style-span" style="font-style: italic;">Peter's an asshole, so this is all bunk. (I'll even bet he likes yams.)</span></blockquote></span></div><div><span class="Apple-style-span" style="font-family: 'trebuchet ms'; font-size: 13px;">This is because whether or not I'm an asshole (and whether or not I have terrible taste) has no bearing on my hypothetical explanation of quantum mechanics or cuneiform. However, you would be perfectly justified in responding,<span class="Apple-style-span" style="font-style: italic; "><blockquote>Peter doesn't know anything about quantum mechanics or Sumerian cuneiform, so this is all bunk.</blockquote></span></span></div><div><span class="Apple-style-span" style="font-family: 'trebuchet ms'; font-size: 13px;">This is because my knowledge of a subject <span class="Apple-style-span" style="font-style: italic;">does </span>have bearing on my attempts to hold discourse on that subject.</span></div><div><span class="Apple-style-span" style="font-family: 'trebuchet ms'; font-size: 13px;"><br /></span></div><div><span class="Apple-style-span" style="font-family: 'trebuchet ms'; font-size: 13px;">All of this is pretty straightforward. The amiguity really arises because we so rarely bother to pay attention to what we're actually talking about, and even when we <span class="Apple-style-span" style="font-style: italic;">are </span>paying attention, it's not always easy to know. In academic discourse, we usually know whether we're talking about literary analysis or class struggle or the potential effects of nanotechnology on medicine, because we usually enter that discourse with intent and awareness. But in "real life," in a world where political and religious ideologies mingle with social norms, economic conditions, Hollywood, the manufacture of needs, and so on... well, it really is legitimately difficult to figure out where and why your opponent stands on the issues, and what the issues <span class="Apple-style-span" style="font-style: italic;">are </span>in the first place.<br /></span></div><div><span class="Apple-style-span" style="font-family: 'trebuchet ms'; font-size: 13px;"><br /></span></div><div><span class="Apple-style-span" style="font-family: 'trebuchet ms'; font-size: 13px;">It gets a little more complicated because there are definitely times when we <span class="Apple-style-span" style="font-style: italic;">want </span>to feel justified in impeaching someone's <span class="Apple-style-span" style="font-style: italic;">character -- </span>as a rule, we're not even going to bother listening to someone's positions on education reform if we know (or believe) him to be a murderer, a rapist, a child molestor, etc. Formally, we are wrong in doing so, unless the topic of discourse is relevant to the prior offense. But we don't really care -- in extreme cases, we generally reserve the freedom to reject someone's arguments on the basis of their character.</span></div><div><span class="Apple-style-span" style="font-family: 'trebuchet ms'; font-size: 13px;"><br /></span></div><div><span class="Apple-style-span" style="font-family: 'trebuchet ms'; font-size: 13px;">It gets a little more complicated still because it's unclear what constitutes an extreme case. Schoolteachers? Probably not. Cannibals? Probably. Drug traffickers? Probably. Politicians? Probably not. Gays? Apparently so, for a lot of people.</span></div><div><span class="Apple-style-span" style="font-family: 'trebuchet ms'; font-size: 13px;"><br /></span></div><div><span class="Apple-style-span" style="font-family: 'trebuchet ms'; font-size: 13px;">And for an extra dose of complexity: sometimes, the very things we use to impeach someone's credibility/qualification on a subject -- to exclude them from a given discourse -- are<span class="Apple-style-span" style="font-style: italic;"> </span>the things that make them participate in that discourse. For example, a claim like</span></div><div><span class="Apple-style-span" style="font-family: 'trebuchet ms'; font-size: 13px;"><span class="Apple-style-span" style="font-style: italic;"><blockquote>Jill is gay, so we should ignore her opinions on legalizing gay marriage [on the grounds of her obvious bias]</blockquote></span></span></div><div><span class="Apple-style-span" style="font-family: 'trebuchet ms'; font-size: 13px;">is <span class="Apple-style-span" style="font-style: italic;">admissible </span>given the guidelines we've established so far. Her gayness <span class="Apple-style-span" style="font-style: italic;">does </span>have bearing on her position on gay marriage. But is this really grounds to dismiss those opinions?</span></div><div><span class="Apple-style-span" style="font-family: 'trebuchet ms'; font-size: 13px;"><br /></span></div><div><span class="Apple-style-span" style="font-family: 'trebuchet ms'; font-size: 13px;">So the moral of the story is this: <span class="Apple-style-span" style="font-style: italic;">pay attention</span>. Pay attention to who says what and why. Pay attention to the accusation -- both to its veracity ("<span class="Apple-style-span" style="font-style: italic;">Does </span>Tim like yams?") and its defensibility ("Is liking yams really such a failing?" [... yes, yes it is]). Pay attention to whether or not you're dealing with an extreme case, as well as to the potential differences with regard to what constitutes such an extreme case.</span></div><div><span class="Apple-style-span" style="font-family: 'trebuchet ms'; font-size: 13px;"><br /></span></div><div><span class="Apple-style-span" style="font-family: 'trebuchet ms'; font-size: 13px;">And just remember... if after all this, someone continues to disagree with you, it's probably because they're stupid.</span></div>Peter Kovalskyhttp://www.blogger.com/profile/02427728617984989522noreply@blogger.com0tag:blogger.com,1999:blog-5980455578884702846.post-3715188363342228792009-04-08T23:19:00.000-07:002009-04-09T00:52:04.258-07:00Random Rants #1<span class="Apple-style-span" style="font-size:small;"><span class="Apple-style-span" style="font-family:'trebuchet ms';">So here's the short of it: on one of the forums I post on, someone broke the Law of the Internet by taking something from this forum and posting it verbatim on a different, related one. It was a personal thing and there was all sorts of drama, and we're all very upset, etc, etc. This is all completely irrelevant. I bring it up only as background for the discussion that followed, with lots of people lamenting the betrayal of their trust, expressing worries about continuing to post on the (ostensibly private) forum, and so on. I don't mean to trivialize these people's reactions of hurt and worry, though I myself don't share them.</span></span><div><span class="Apple-style-span" style=" ;font-family:'trebuchet ms';font-size:13px;"><br /></span></div><div><span class="Apple-style-span" style=" ;font-family:'trebuchet ms';font-size:13px;">Anyway, the discussion turned to "What can we do to prevent this from happening again?" I suggested that we stop feeling compelled to keep secrets, as this would prevent the breaching of trust from ever becoming a problem. Everyone laughed.</span></div><div><span class="Apple-style-span" style=" ;font-family:'trebuchet ms';font-size:13px;"><br /></span></div><div><span class="Apple-style-span" style=" ;font-family:'trebuchet ms';"><span class="Apple-style-span" style="font-weight: bold;"><span class="Apple-style-span" style="font-size:medium;"><u>Part 1 of my rant</u></span></span></span></div><div><span class="Apple-style-span" style=" ;font-family:'trebuchet ms';font-size:13px;">Why is it that even when we're looking for solutions to a problem, we're unwilling to look at the greater context that makes the problem a problem in the first place? Imagine someone saying, "I'm building a house, but I don't have enough nails. Where can I find more?" Would it be reasonable for this person to scoff at a reply like, "I don't have any nails, but why don't you just build the house without any? Here, I'll show you how"?</span></div><div><span class="Apple-style-span" style=" ;font-family:'trebuchet ms';font-size:13px;"><br /></span></div><div><span class="Apple-style-span" style=" ;font-family:'trebuchet ms';font-size:13px;">Or, more generally: if I'm playing by rules A, B, and C, and I'm worried about someone breaking rule C... as long as rule C isn't absolutely intrinsic to the game, wouldn't it make more sense to just abandon rule C yourself, rather than creating a rule D that says, in effect, "follow rule C"? (Incidentally, this is related to a number of problems regarding logic, and is very well-illustrated in Lewis Carroll's <i><a href="http://www.ditext.com/carroll/tortoise.html">What the Tortoise Said to Achilles</a></i>.)</span></div><div><span class="Apple-style-span" style=" ;font-family:'trebuchet ms';font-size:13px;"><br /></span></div><div><span class="Apple-style-span" style=" ;font-family:'trebuchet ms';font-size:13px;">And if we insist on continuing to play by the old rules, doesn't it behoove us to accept the risks and vulnerabilities that playing by those rules entails?</span></div><div><span class="Apple-style-span" style=" ;font-family:'trebuchet ms';font-size:13px;"><br /></span></div><div><span class="Apple-style-span" style=" ;font-family:'trebuchet ms';"><span class="Apple-style-span" style="font-weight: bold;"><span class="Apple-style-span" style="font-size:medium;"><u>Part 2 of my rant</u></span></span></span></div><div><span class="Apple-style-span" style=" "><span class="Apple-style-span" style="font-family: 'trebuchet ms';"><span class="Apple-style-span" style="font-size: small;">One of the responses to my suggestion was something like, "WTF at Peter turning this into a philosophical discussion." I'm not sure what exactly constitutes a philosophical discussion -- I'm inclined to think that a philosophical discussion is characterized by its style and tenor rather than by its content. </span></span></span></div><div><span class="Apple-style-span" style="font-family: 'trebuchet ms';"><span class="Apple-style-span" style="font-size: small;"><br /></span></span></div><div><span class="Apple-style-span" style=" "><span class="Apple-style-span" style="font-family: 'trebuchet ms';"><span class="Apple-style-span" style="font-size: small;">Anyway, this is something I've been seeing a lot lately -- when we don't want to deal with an idea, we just say "Oh, that's so philosophical" and write it off, as if that made it somehow inapplicable to the world we live in.</span></span></span></div><div><span class="Apple-style-span" style=" "><span class="Apple-style-span" style="font-family: 'trebuchet ms';"><span class="Apple-style-span" style="font-size: small;"><br /></span></span></span></div><div><span class="Apple-style-span" style=" "><span class="Apple-style-span" style="font-family: 'trebuchet ms';"><span class="Apple-style-span" style="font-size: small;">And maybe it's true that sometimes, we philosophers contribute tidbits that are both true and irrelevant. But asking "What should we do?" and then rejecting a "This is what you should do" response on the grounds that it's just "philosophical"... well. Honestly, I'm not even sure where to begin with this one. Suffice it to say that you shouldn't do it.</span></span></span></div>Peter Kovalskyhttp://www.blogger.com/profile/02427728617984989522noreply@blogger.com1tag:blogger.com,1999:blog-5980455578884702846.post-7925847557383351772009-03-29T20:08:00.000-07:002009-04-03T09:35:52.604-07:00You Can Think It, Just Don't Say It<span class="Apple-style-span" style="font-family: 'trebuchet ms';"><span class="Apple-style-span" style="font-size: small;">This has been a pet peeve of mine for a long time, and an online friend of mine just reminded me of it. She was complaining about her roommate, who is a fairly conservative Christian and has the gall to outwardly disapprove of behavior of which her religion compels her to disapprove inwardly. A discussion ensued in which everybody recounted cases of people being "judgmental" as a result of their moral codes (which were generally the results of religious beliefs). The overall tenor of the conversation was that it's okay to hold a position as long as you don't criticize others for not holding that position. This is all very politically correct.</span></span><span class="Apple-style-span" style="font-family: 'trebuchet ms';"><span class="Apple-style-span" style="font-size: small;"> </span></span><div><span class="Apple-style-span" style="font-family: 'trebuchet ms';"><span class="Apple-style-span" style="font-size: small;"><br /></span></span></div><div><span class="Apple-style-span" style="font-family: 'trebuchet ms';"><span class="Apple-style-span" style="font-size: small;">It's also preposterous, for at least two reasons.</span></span></div><div><span class="Apple-style-span" style="font-family: 'trebuchet ms';"><span class="Apple-style-span" style="font-size: small;"><br /></span></span></div><div><span class="Apple-style-span" style="font-family: 'trebuchet ms';"><span class="Apple-style-span" style="font-size: small;">First, when we do something, we are also asserting that </span></span><span class="Apple-style-span" style="FONT-STYLE: italic"><span class="Apple-style-span" style="font-family: 'trebuchet ms';"><span class="Apple-style-span" style="font-size: small;">it is the right thing to do -- </span></span></span><span class="Apple-style-span" style="font-family: 'trebuchet ms';"><span class="Apple-style-span" style="font-size: small;">if we believed that something else was the right thing to do, we would do that thing instead. (This is a slight extension of Socrates' critique of </span></span><a href="http://en.wikipedia.org/wiki/Akrasia"><span class="Apple-style-span" style="FONT-STYLE: italic"><span class="Apple-style-span" style="font-family: 'trebuchet ms';"><span class="Apple-style-span" style="font-size: small;">akrasia</span></span></span></a><span class="Apple-style-span" style="font-family: 'trebuchet ms';"><span class="Apple-style-span" style="font-size: small;"> -- acting against our own better judgment -- which Socrates asserts we are unable to engage in.) In a certain sense, whenever there are two possible courses of action and I select one while someone else selects the other, </span></span><span class="Apple-style-span" style="FONT-STYLE: italic"><span class="Apple-style-span" style="font-family: 'trebuchet ms';"><span class="Apple-style-span" style="font-size: small;">I am asserting that the other person is in error.</span></span></span><span class="Apple-style-span" style="font-family: 'trebuchet ms';"><span class="Apple-style-span" style="font-size: small;"> (Obviously, this applies only to actions performed with intent. When we trip and fall down by accident, we are not also asserting that others </span></span><span class="Apple-style-span" style="FONT-STYLE: italic"><span class="Apple-style-span" style="font-family: 'trebuchet ms';"><span class="Apple-style-span" style="font-size: small;">should </span></span></span><span class="Apple-style-span" style="font-family: 'trebuchet ms';"><span class="Apple-style-span" style="font-size: small;">trip and fall down.)</span></span></div><div><span class="Apple-style-span" style="font-family: 'trebuchet ms';"><span class="Apple-style-span" style="font-size: small;"><br /></span></span></div><div><span class="Apple-style-span" style="font-family: 'trebuchet ms';"><span class="Apple-style-span" style="font-size: small;">Now, there's a difference between describing a </span></span><span class="Apple-style-span" style="FONT-STYLE: italic"><span class="Apple-style-span" style="font-family: 'trebuchet ms';"><span class="Apple-style-span" style="font-size: small;">state </span></span></span><span class="Apple-style-span" style="font-family: 'trebuchet ms';"><span class="Apple-style-span" style="font-size: small;">("Yams are starchy tubers") and describing an </span></span><span class="Apple-style-span" style="FONT-STYLE: italic"><span class="Apple-style-span" style="font-family: 'trebuchet ms';"><span class="Apple-style-span" style="font-size: small;">action</span></span></span><span class="Apple-style-span" style="font-family: 'trebuchet ms';"><span class="Apple-style-span" style="font-size: small;"> ("I destroy yams") because </span></span><span class="Apple-style-span" style="FONT-STYLE: italic"><span class="Apple-style-span" style="font-family: 'trebuchet ms';"><span class="Apple-style-span" style="font-size: small;">actions</span></span></span><span class="Apple-style-span" style="font-family: 'trebuchet ms';"><span class="Apple-style-span" style="font-size: small;"> carry the implied assertion that acting </span></span><span class="Apple-style-span" style="FONT-STYLE: italic"><span class="Apple-style-span" style="font-family: 'trebuchet ms';"><span class="Apple-style-span" style="font-size: small;">otherwise</span></span></span><span class="Apple-style-span" style="font-family: 'trebuchet ms';"><span class="Apple-style-span" style="font-size: small;"> is unreasonable or immoral.<br /></span></span></div><div><span class="Apple-style-span" style="font-family: 'trebuchet ms';"><span class="Apple-style-span" style="font-size: small;"><br /></span></span></div><div><span class="Apple-style-span" style="font-family: 'trebuchet ms';"><span class="Apple-style-span" style="font-size: small;">I believe it would be an error to regard statements like "I am a Christian" as descriptions of </span></span><span class="Apple-style-span" style="FONT-STYLE: italic"><span class="Apple-style-span" style="font-family: 'trebuchet ms';"><span class="Apple-style-span" style="font-size: small;">states</span></span></span><span class="Apple-style-span" style="font-family: 'trebuchet ms';"><span class="Apple-style-span" style="font-size: small;">. There is a fundamental difference between statements like "I am a Christian" or "I am a Democrat" and statements like "I am a man" or "I am a Wisconsinite." When we belong to a group defined by its ideology, we do so </span></span><span class="Apple-style-span" style="FONT-STYLE: italic"><span class="Apple-style-span" style="font-family: 'trebuchet ms';"><span class="Apple-style-span" style="font-size: small;">with intent</span></span></span><span class="Apple-style-span" style="font-family: 'trebuchet ms';"><span class="Apple-style-span" style="font-size: small;">. This is why "I am a Zoroastrian" implies that it is wrong to be other than a Zoroastrian.</span></span></div><div><span class="Apple-style-span" style="font-family: 'trebuchet ms';"><span class="Apple-style-span" style="font-size: small;"><br /></span></span></div><div><span class="Apple-style-span" style="font-family: 'trebuchet ms';"><span class="Apple-style-span" style="font-size: small;">Now, the position I'm objecting to here is that people are free to have their beliefs </span></span><span class="Apple-style-span" style="FONT-STYLE: italic"><span class="Apple-style-span" style="font-family: 'trebuchet ms';"><span class="Apple-style-span" style="font-size: small;">as long as they don't criticize others </span></span></span><span class="Apple-style-span" style="font-family: 'trebuchet ms';"><span class="Apple-style-span" style="font-size: small;">for not holding those same beliefs. The first part of my objection is that we are already criticizing others, </span></span><span class="Apple-style-span" style="FONT-STYLE: italic"><span class="Apple-style-span" style="font-family: 'trebuchet ms';"><span class="Apple-style-span" style="font-size: small;">simply by virtue of disagreeing with them</span></span></span><span class="Apple-style-span" style="font-family: 'trebuchet ms';"><span class="Apple-style-span" style="font-size: small;">. But one is not compelled to accept the impossibility of </span></span><span class="Apple-style-span" style="FONT-STYLE: italic"><span class="Apple-style-span" style="font-family: 'trebuchet ms';"><span class="Apple-style-span" style="font-size: small;">akrasia </span></span></span><span class="Apple-style-span" style="font-family: 'trebuchet ms';"><span class="Apple-style-span" style="font-size: small;">as a premise, as I have done, or to accept that the implicit criticism is as significant as explicit criticism (stating aloud that "If you have sex with your boyfriend, you'll go to hell," etc.) as I have also done.</span></span></div><div><span class="Apple-style-span" style="font-family: 'trebuchet ms';"><span class="Apple-style-span" style="font-size: small;"><br /></span></span></div><div><span class="Apple-style-span" style="font-family: 'trebuchet ms';"><span class="Apple-style-span" style="font-size: small;">So, secondly, it's important to remember that what we're talking about here are beliefs about </span></span><span class="Apple-style-span" style="FONT-STYLE: italic"><span class="Apple-style-span" style="font-family: 'trebuchet ms';"><span class="Apple-style-span" style="font-size: small;">how one ought to act</span></span></span><span class="Apple-style-span" style="font-family: 'trebuchet ms';"><span class="Apple-style-span" style="font-size: small;">. But of course, we don't act in a vacuum -- we act in response to or as a result of states of affairs ("Yams are gross, so I will destroy them"), other actions ("Yams killed my father, so I will destroy them"), and the beliefs that we hold ("Yams are evil, so I will destroy them"). And, of course, the beliefs that we hold aren't </span></span><span class="Apple-style-span" style="FONT-STYLE: italic"><span class="Apple-style-span" style="font-family: 'trebuchet ms';"><span class="Apple-style-span" style="font-size: small;">just </span></span></span><span class="Apple-style-span" style="font-family: 'trebuchet ms';"><span class="Apple-style-span" style="font-size: small;">about objects in the world, </span></span><span class="Apple-style-span" style="FONT-STYLE: italic"><span class="Apple-style-span" style="font-family: 'trebuchet ms';"><span class="Apple-style-span" style="font-size: small;">but also about actions</span></span></span><span class="Apple-style-span" style="font-family: 'trebuchet ms';"><span class="Apple-style-span" style="font-size: small;"> ("It is immoral to beat your kids").</span></span><span class="Apple-style-span" style="font-family: 'trebuchet ms';"><span class="Apple-style-span" style="font-size: small;"><br /></span></span></div><div><span class="Apple-style-span" style="font-family: 'trebuchet ms';"><span class="Apple-style-span" style="font-size: small;"><br /></span></span></div><div><span class="Apple-style-span" style="font-family: 'trebuchet ms';"><span class="Apple-style-span" style="font-size: small;">It turns out that we hold lots of beliefs about how one ought to act </span></span><span class="Apple-style-span" style="FONT-STYLE: italic"><span class="Apple-style-span" style="font-family: 'trebuchet ms';"><span class="Apple-style-span" style="font-size: small;">as a result of our beliefs </span></span></span><span class="Apple-style-span" style="font-family: 'trebuchet ms';"><span class="Apple-style-span" style="font-size: small;">("We must bear witness to the greatness of our Lord and Savior").</span></span></div><div><span class="Apple-style-span" style="font-family: 'trebuchet ms';"><span class="Apple-style-span" style="font-size: small;"><br /></span></span></div><div><span class="Apple-style-span" style="font-family: 'trebuchet ms';"><span class="Apple-style-span" style="font-size: small;">This is why it is impossible to suggest that a person should A) hold their beliefs, and B) be silent about their beliefs -- because some or many of their beliefs involve the call to speech. Personally, I get on people's nerves a lot because I just </span></span><span class="Apple-style-span" style="FONT-STYLE: italic"><span class="Apple-style-span" style="font-family: 'trebuchet ms';"><span class="Apple-style-span" style="font-size: small;">keep arguing</span></span></span><span class="Apple-style-span" style="font-family: 'trebuchet ms';"><span class="Apple-style-span" style="font-size: small;"> -- but I am driven by the belief that to do otherwise, to allow someone to continue to be wrong, would be immoral on my part. Similarly, the adherents of many religions are </span></span><span class="Apple-style-span" style="FONT-STYLE: italic"><span class="Apple-style-span" style="font-family: 'trebuchet ms';"><span class="Apple-style-span" style="font-size: small;">required</span></span></span><span class="Apple-style-span" style="font-family: 'trebuchet ms';"><span class="Apple-style-span" style="font-size: small;"> to proselytize or outwardly express their positions.</span></span></div><div><span class="Apple-style-span" style="font-family: 'trebuchet ms';"><span class="Apple-style-span" style="font-size: small;"><br /></span></span></div><div><span class="Apple-style-span" style="font-family: 'trebuchet ms';"><span class="Apple-style-span" style="font-size: small;">And here's some food for thought: the belief that "You can believe what you want, just don't push it on others" is an example of a belief about how one should act as a result of one's beliefs. It happens to be a very popular one, these days (that is, it's one that we love to push on people). </span></span></div><div><span class="Apple-style-span" style="font-family: 'trebuchet ms';"><span class="Apple-style-span" style="font-size: small;"><br /></span></span></div><div><span class="Apple-style-span" style="font-family: 'trebuchet ms';"><span class="Apple-style-span" style="font-size: small;">Telling people who disagree with you that they can think what they want as long as they're quiet about it is, at worst, profoundly hypocritical. At best, it is a stumbling into the </span></span><a href="http://en.wikipedia.org/wiki/Cretan_paradox"><span class="Apple-style-span" style="font-family: 'trebuchet ms';"><span class="Apple-style-span" style="font-size: small;">Cretan paradox</span></span></a><span class="Apple-style-span" style="font-family: 'trebuchet ms';"><span class="Apple-style-span" style="font-size: small;"> or </span></span><span class="Apple-style-span" style="FONT-STYLE: italic"><a href="http://en.wikipedia.org/wiki/Liar_paradox"><span class="Apple-style-span" style="font-family: 'trebuchet ms';"><span class="Apple-style-span" style="font-size: small;">pseudomenon</span></span></a></span><span class="Apple-style-span" style="font-family: 'trebuchet ms';"><span class="Apple-style-span" style="font-size: small;">: an assertion that undermines its own validity.</span></span></div>Peter Kovalskyhttp://www.blogger.com/profile/02427728617984989522noreply@blogger.com10tag:blogger.com,1999:blog-5980455578884702846.post-274164329137042762009-03-27T00:32:00.000-07:002009-03-27T02:34:55.337-07:00Fallacy of the Week #2<span class="Apple-style-span" style="font-family:'trebuchet ms';"><span class="Apple-style-span" style="font-size:small;">Whenever you turn on the TV or pick up a newspaper, you're likely to see someone shouting about one thing leading to another, leading to another, leading to something horrible. Whenever you see this, you're seeing an example of the </span></span><a href="http://en.wikipedia.org/wiki/Slippery_slope"><span class="Apple-style-span" style="font-family:'trebuchet ms';"><span class="Apple-style-span" style="font-size:small;">slippery slope fallacy</span></span></a><span class="Apple-style-span" style="font-family:'trebuchet ms';"><span class="Apple-style-span" style="font-size:small;">. The curious thing about this fallacy is that while it isn't a valid form of argument, it nevertheless doesn't invalidate the conclusions. As we discussed last week, the following is more or less a true statement (and is, regardless, a reasonable thing to say):</span></span><div><span class="Apple-style-span" style="color: rgb(41, 48, 59); font-style: italic; line-height: 20px; "><blockquote><span class="Apple-style-span" style="font-family:'trebuchet ms';"><span class="Apple-style-span" style="font-size:small;">This mixture of cyanide and arsenic is poisonous, because cyanide is poisonous and arsenic is poisonous.</span></span></blockquote></span></div><div><span class="Apple-style-span" style=" ;font-family:'trebuchet ms';font-size:13px;">We can restate this as a conditional, just to make things a little easier later:</span></div><div><span class="Apple-style-span" style=" ;font-family:'trebuchet ms';font-size:13px;"><blockquote><span class="Apple-style-span" style="font-style: italic;">If cyanide is poisonous and arsenic is poisonous, then the mixture of cyanide and arsenic is poisonous.</span></blockquote></span></div><div><span class="Apple-style-span" style="font-family:'trebuchet ms';"><span class="Apple-style-span" style="font-size:small;">But that's not quite right. In our daily discourse, we generally don't bother to distinguish between the claims we make and the meanings they express (or the conclusions they bring us to). As a general rule, our arguments consist of three <span class="Apple-style-span" style="font-style: italic;">types </span>of elements:</span></span></div><div><ol><li><span class="Apple-style-span" style=" font-weight: bold; font-size:13px;">logical connectors (of which conditionals are one subtype)</span><br /></li><li><span class="Apple-style-span" style=" ;font-size:13px;"><span class="Apple-style-span" style="text-decoration: underline; -webkit-text-decorations-in-effect: underline; ">premises (information that we're arguing </span><span class="Apple-style-span" style="font-style: italic; "><span class="Apple-style-span" style="text-decoration: underline; -webkit-text-decorations-in-effect: underline; ">from</span></span><span class="Apple-style-span" style="text-decoration: underline; -webkit-text-decorations-in-effect: underline; ">, and which we assume to be true)</span></span><br /></li><li><span class="Apple-style-span" style=" ;font-size:13px;"><span class="Apple-style-span" style="font-style: italic;">conclusions</span></span><br /></li></ol></div><div><span class="Apple-style-span" style=" ;font-family:'trebuchet ms';font-size:13px;">In order for an argument to be effective, all three must "work." Typically, when we go to the trouble of making a claim like this:</span></div><div><span class="Apple-style-span" style=" ;font-family:'trebuchet ms';font-size:13px;"><span class="Apple-style-span" style="font-style: italic;"><blockquote>It's a good idea to study a lot, because knowledge is power,</blockquote></span></span></div><div><span class="Apple-style-span" style=" ;font-family:'trebuchet ms';font-size:13px;">the structure of our argument is something like this:</span></div><div><ol><li><span class="Apple-style-span" style="font-size:small;"><span class="Apple-style-span" style="font-weight: bold;">if you study, then you will gain knowledge</span></span></li><li><span class="Apple-style-span" style="text-decoration: underline;"><span class="Apple-style-span" style="font-size:small;">power is desirable; knowledge really </span></span><span class="Apple-style-span" style="font-style: italic; "><span class="Apple-style-span" style="text-decoration: underline;"><span class="Apple-style-span" style="font-size:small;">is</span></span></span><span class="Apple-style-span" style="text-decoration: underline;"><span class="Apple-style-span" style="font-size:small;"> power</span></span><span class="Apple-style-span" style="font-size:small;"><br /></span></li><li><span class="Apple-style-span" style="font-size:small;"><span class="Apple-style-span" style="font-style: italic;">it's a good idea to study a lot</span></span></li></ol></div><div><span class="Apple-style-span" style=" ;font-family:'trebuchet ms';font-size:13px;">Or, more generally:</span></div><div><ol><li><span class="Apple-style-span" style="font-weight: bold;"><span class="Apple-style-span" style="font-size:small;">If A, then B</span></span></li><li><span class="Apple-style-span" style="text-decoration: underline;"><span class="Apple-style-span" style="font-size:small;">A</span></span></li><li><span class="Apple-style-span" style="font-size:small;"><span class="Apple-style-span" style="font-style: italic;">Therefore B</span></span></li></ol></div><div><span class="Apple-style-span" style="font-family:'trebuchet ms';"><span class="Apple-style-span" style="font-size:small;">To illustrate this, let's consider an example where the conditional holds but the premise and conclusion are false:</span></span></div><div><span class="Apple-style-span" style=" ;font-family:'trebuchet ms';font-size:13px;"><span class="Apple-style-span" style="font-style: italic;"><blockquote>If I were a teapot, I could be used to boil water.</blockquote></span></span></div><div><span class="Apple-style-span" style=" ;font-family:'trebuchet ms';font-size:13px;">I am (fortunately) not a teapot and I (tragically) cannot be used to boil water, but the conditional nevertheless holds. On the other hand, we can come up with statements where the premise and conclusion are true but the conditional fails:</span></div><div><span class="Apple-style-span" style=" ;font-family:'trebuchet ms';font-size:13px;"><span class="Apple-style-span" style="font-style: italic;"><blockquote>If the Earth is roughly spherical, its core must be very hot.</blockquote></span></span></div><div><span class="Apple-style-span" style=" ;font-family:'trebuchet ms';font-size:13px;">While the Earth <span class="Apple-style-span" style="font-style: italic;">is</span> roughly spherical, and while its core <span class="Apple-style-span" style="font-style: italic;">is</span> very hot, the conditional itself fails. This obviously doesn't mean that the Earth's core isn't hot, but it <span class="Apple-style-span" style="font-style: italic;">does mean that we cannot conclude from the Earth's roundness that its core is hot. </span></span></div><div><span class="Apple-style-span" style=" ;font-family:'trebuchet ms';font-size:13px;"><br /></span></div><div><span class="Apple-style-span" style=" ;font-family:'trebuchet ms';font-size:13px;">We can come up with lots of other examples of arguments that fail because one or more of those three elements fails. The point, though, is to really get a feel for the difference between the assertion that "<span class="Apple-style-span" style="font-weight: bold;">If A, then B</span>" and the conclusion that "<span class="Apple-style-span" style="font-style: italic;">B is the case</span>."</span></div><div><span class="Apple-style-span" style=" ;font-family:'trebuchet ms';font-size:13px;"><br /></span></div><div><span class="Apple-style-span" style=" ;font-family:'trebuchet ms';font-size:13px;">To get back to slippery slopes, we can reconstruct such an argument more or less like this:</span></div><div><ol><li><span class="Apple-style-span" style="font-size:small;"><span class="Apple-style-span" style="font-weight: bold;">If A, then B</span></span></li><li><span class="Apple-style-span" style="font-size:small;"><span class="Apple-style-span" style="font-weight: bold;">If B, then C</span></span></li><li><span class="Apple-style-span" style="font-size:small;"><span class="Apple-style-span" style="font-weight: bold;">If C, then D</span></span></li><li><span class="Apple-style-span" style="font-size:small;"><span class="Apple-style-span" style="text-decoration: underline;">A</span></span></li><li><span class="Apple-style-span" style="font-size:small;"><span class="Apple-style-span" style="font-style: italic;">Therefore D</span></span></li></ol><span class="Apple-style-span" style="font-size:small;">So why is this problematic? Well, it's really not, assuming that all of those conditionals work. The problem comes in because each of those added steps might fail, causing the whole chain to fail. That is, increasingly complex systems face increasing margins of doubt. Because most of the reasoning we do is inductive (arguing <span class="Apple-style-span" style="font-style: italic;">from </span>particular cases <span class="Apple-style-span" style="font-style: italic;">to </span>general principles) and therefore not truth-preserving (we are not <span class="Apple-style-span" style="font-style: italic;">guaranteed </span>true conclusions, even with true premises and working conditionals), each additional step increases the chances of failure.</span></div><div><span class="Apple-style-span" style="font-size:13px;"><br /></span></div><div><span class="Apple-style-span" style="font-size:13px;">This is why it's generally reasonable to make claims like,</span></div><div><span class="Apple-style-span" style="font-size:13px;"><span class="Apple-style-span" style="font-style: italic;"><blockquote>If we all stop buying stocks, the stock market will suffer and stock prices will drop,</blockquote></span></span></div><div><span class="Apple-style-span" style="font-size:13px;">but not claims like,</span></div><div><span class="Apple-style-span" style="font-size:13px;"><span class="Apple-style-span" style="font-style: italic;"><blockquote>If we all stop buying stocks, the stock market will suffer and stock prices will drop, and the government will privatize banks, and we'll start wars across the globe to stimulate industry, and everyone will hate us, and then we'll all nuke each other and the human race will die out,</blockquote><span class="Apple-style-span" style="font-style: normal;">even </span>if </span><span class="Apple-style-span" style="">we can accept that every step along that chain is a pretty reasonable one.</span></span></div>Peter Kovalskyhttp://www.blogger.com/profile/02427728617984989522noreply@blogger.com1tag:blogger.com,1999:blog-5980455578884702846.post-72828482573539981542009-03-20T01:47:00.000-07:002009-03-20T02:40:57.555-07:00But What If It Goes Wrong?<div style="text-align: justify;"><span class="Apple-style-span" style=" "><span class="Apple-style-span" style="font-family:'trebuchet ms';"><span class="Apple-style-span" style="font-size:small;">A particularly common argument against doing something (usually something </span></span><span class="Apple-style-span" style="font-style: italic; "><span class="Apple-style-span" style="font-family:'trebuchet ms';"><span class="Apple-style-span" style="font-size:small;">new</span></span></span><span class="Apple-style-span" style="font-family:'trebuchet ms';"><span class="Apple-style-span" style="font-size:small;">, but not always) is to point out that it will lead to unacceptable or undesirable consequences, </span></span><span class="Apple-style-span" style="font-style: italic; "><span class="Apple-style-span" style="font-family:'trebuchet ms';"><span class="Apple-style-span" style="font-size:small;">e.g.</span></span></span></span><span class="Apple-style-span" style="font-family:'trebuchet ms';"><span class="Apple-style-span" style="font-size:small;"><br /></span></span></div><div><span class="Apple-style-span" style=" font-style: italic;"><blockquote style="text-align: justify;"><span class="Apple-style-span" style="font-family:'trebuchet ms';"><span class="Apple-style-span" style="font-size:small;">But if we allow gays to marry, what's to stop polygamists from getting married?</span></span></blockquote><span class="Apple-style-span" style="font-style: normal;"><div style="text-align: justify;"><span class="Apple-style-span" style=" "><span class="Apple-style-span" style=" font-style: italic; "><span class="Apple-style-span" style="font-style: normal; "><span class="Apple-style-span" style="font-family:'trebuchet ms';"><span class="Apple-style-span" style="font-size:small;">Rebutting an argument of this form is tricky business, because there are a lot of ways in which it can be wrong. And sometimes, it isn't -- sometimes, it's okay to argue this way. (Check back next week for an exploration of the s</span></span></span><span class="Apple-style-span" style="font-family:'trebuchet ms';"><span class="Apple-style-span" style="font-size:small;">lippery slope </span></span></span><span class="Apple-style-span" style=" "><span class="Apple-style-span" style="font-family:'trebuchet ms';"><span class="Apple-style-span" style="font-size:small;">fallacy.)</span></span></span></span><span class="Apple-style-span" style="font-family:'trebuchet ms';"><span class="Apple-style-span" style="font-size:small;"><br /></span></span></div></span></span><span class="Apple-style-span" style="font-family:'trebuchet ms';"><span class="Apple-style-span" style="font-size:small;"><span class="Apple-style-span" style=" "></span></span></span></div><div style="text-align: justify;"><span class="Apple-style-span" style=" "><span class="Apple-style-span" style="font-family:'trebuchet ms';"><span class="Apple-style-span" style="font-size:small;"><br /></span></span></span></div><div style="text-align: justify;"><span class="Apple-style-span" style=" "><span class="Apple-style-span" style="font-family:'trebuchet ms';"><span class="Apple-style-span" style="font-size:small;">First of all, in order for an argument of this type to be effective, the undesirable consequences need to actually be undesirable. For example, it would be unreasonable for most of us to ask,</span></span></span></div><div><span class="Apple-style-span" style=" "><blockquote style="text-align: justify;"><span class="Apple-style-span" style="font-style: italic;"><span class="Apple-style-span" style="font-family:'trebuchet ms';"><span class="Apple-style-span" style="font-size:small;">But if we make higher education available and affordable, what's to stop everyone from getting a university education?</span></span></span></blockquote></span></div><div style="text-align: justify;"><span class="Apple-style-span" style=" "><span class="Apple-style-span" style="font-family:'trebuchet ms';"><span class="Apple-style-span" style="font-size:small;">This is because it's hard for us to accept that everyone getting a university education is something that we want to avoid or preclude. So our first defense against this sort of argument is to ask for a demonstration of why that consequence is unacceptable. (Personally, I'm not yet convinced that there's any reason to stop the polygamists from being able to marry.)</span></span></span></div><div style="text-align: justify;"><span class="Apple-style-span" style=" "><span class="Apple-style-span" style="font-family:'trebuchet ms';"><span class="Apple-style-span" style="font-size:small;"><br /></span></span></span></div><div style="text-align: justify;"><span class="Apple-style-span" style=" "><span class="Apple-style-span" style="font-family:'trebuchet ms';"><span class="Apple-style-span" style="font-size:small;">Second, in order for an argument of this type to be effective, the causal relationship between the antecedent (the "if" clause) and the consequent (the "then" clause) must be plausible. For example, it woud be unreasonable for most of us to ask,</span></span></span></div><div style="text-align: justify;"><span class="Apple-style-span" style=" "><blockquote><span class="Apple-style-span" style="font-style: italic;"><span class="Apple-style-span" style="font-family:'trebuchet ms';"><span class="Apple-style-span" style="font-size:small;">But if we make higher education available and affordable, what's to stop farmers from growing too many yams?</span></span></span></blockquote></span></div><div style="text-align: justify;"><span class="Apple-style-span" style=" "><span class="Apple-style-span" style="font-family:'trebuchet ms';"><span class="Apple-style-span" style="font-size:small;">Even if we accept that the potential outcome is unacceptable (pretend yams killed your father or something), the argument fails because there's no obvious link between availability of education and yam-growing. So our second defense against this sort of argument is to ask for a demonstration of the causal connection between the antecedent and the consequent.</span></span></span></div><div style="text-align: justify;"><span class="Apple-style-span" style=" "><span class="Apple-style-span" style="font-family:'trebuchet ms';"><span class="Apple-style-span" style="font-size:small;"><br /></span></span></span></div><div style="text-align: justify;"><span class="Apple-style-span" style=" "><span class="Apple-style-span" style="font-family:'trebuchet ms';"><span class="Apple-style-span" style="font-size:small;">Third, in order for an argument of this type to be effective, the causal link must not admit of exceptions. For example, it would be unreasonable for most of us to ask,</span></span></span></div><div style="text-align: justify;"><span class="Apple-style-span" style=" "><span class="Apple-style-span" style="font-style: italic;"><blockquote><span class="Apple-style-span" style="font-family:'trebuchet ms';"><span class="Apple-style-span" style="font-size:small;">But if we raise teachers' salaries, what's to stop logicians from demanding/expecting a raise?</span></span></blockquote></span></span></div><div style="text-align: justify;"><span class="Apple-style-span" style=" "><span class="Apple-style-span" style="font-family:'trebuchet ms';"><span class="Apple-style-span" style="font-size:small;">Even if we accept that logicians demanding a raise is unacceptable (they perhaps exhibit an excessive fondness for yams), </span></span><span class="Apple-style-span" style="font-style: italic;"><span class="Apple-style-span" style="font-family:'trebuchet ms';"><span class="Apple-style-span" style="font-size:small;">and </span></span></span><span class="Apple-style-span" style="font-family:'trebuchet ms';"><span class="Apple-style-span" style="font-size:small;">we accept that an increase in teachers' salaries should lead to an increase in logicians' salaries, the argument might </span></span><span class="Apple-style-span" style="font-style: italic;"><span class="Apple-style-span" style="font-family:'trebuchet ms';"><span class="Apple-style-span" style="font-size:small;">still </span></span></span><span class="Apple-style-span" style="font-family:'trebuchet ms';"><span class="Apple-style-span" style="font-size:small;">fail because a logician's work is substantively different from a teacher's, and that the causal link therefore doesn't actually apply. So our third defense against this sort of argument is to challenge the validity of what </span></span><span class="Apple-style-span" style="font-style: italic;"><span class="Apple-style-span" style="font-family:'trebuchet ms';"><span class="Apple-style-span" style="font-size:small;">appears </span></span></span><span class="Apple-style-span" style="font-family:'trebuchet ms';"><span class="Apple-style-span" style="font-size:small;">to be a legitimate causal link.</span></span></span></div><div style="text-align: justify;"><span class="Apple-style-span" style=" "><span class="Apple-style-span" style="font-family:'trebuchet ms';"><span class="Apple-style-span" style="font-size:small;"><br /></span></span></span></div><div style="text-align: justify;"><span class="Apple-style-span" style=" "><span class="Apple-style-span" style="font-family:'trebuchet ms';"><span class="Apple-style-span" style="font-size:small;">If all of these defenses have been exhausted to no avail, we're left with arguments about the particulars of the situation in question, and about the </span></span><span class="Apple-style-span" style="font-style: italic;"><span class="Apple-style-span" style="font-family:'trebuchet ms';"><span class="Apple-style-span" style="font-size:small;">probabilities </span></span></span><span class="Apple-style-span" style="font-family:'trebuchet ms';"><span class="Apple-style-span" style="font-size:small;">of various consequences. For example, if someone were to ask,</span></span></span></div><div style="text-align: justify;"><span class="Apple-style-span" style=" "><span class="Apple-style-span" style="font-style: italic;"><blockquote><span class="Apple-style-span" style="font-family:'trebuchet ms';"><span class="Apple-style-span" style="font-size:small;">If we research genetic modification, what's to stop us from resurrecting eugenics?</span></span></blockquote></span></span></div><div style="text-align: justify;"><span class="Apple-style-span" style=" "><span class="Apple-style-span" style="font-family:'trebuchet ms';"><span class="Apple-style-span" style="font-size:small;">The consequences </span></span><span class="Apple-style-span" style="font-style: italic;"><span class="Apple-style-span" style="font-family:'trebuchet ms';"><span class="Apple-style-span" style="font-size:small;">do </span></span></span><span class="Apple-style-span" style="font-family:'trebuchet ms';"><span class="Apple-style-span" style="font-size:small;">seem pretty unacceptable (to most of us, though not to me personally), and the causal link </span></span><span class="Apple-style-span" style="font-style: italic;"><span class="Apple-style-span" style="font-family:'trebuchet ms';"><span class="Apple-style-span" style="font-size:small;">does </span></span></span><span class="Apple-style-span" style="font-family:'trebuchet ms';"><span class="Apple-style-span" style="font-size:small;">seem pretty valid. What to do? The best defense available at this point is something like,</span></span><span class="Apple-style-span" style="font-style: italic; "><blockquote><span class="Apple-style-span" style="font-family:'trebuchet ms';"><span class="Apple-style-span" style="font-size:small;">Well, yes, it </span></span><span class="Apple-style-span" style="font-style: normal; "><span class="Apple-style-span" style="font-family:'trebuchet ms';"><span class="Apple-style-span" style="font-size:small;">could </span></span></span><span class="Apple-style-span" style="font-family:'trebuchet ms';"><span class="Apple-style-span" style="font-size:small;">turn out that way, but this is why it won't (or probably won't)...</span></span></blockquote></span></span></div><div style="text-align: justify;"><span class="Apple-style-span" style=" "><span class="Apple-style-span" style="font-family:'trebuchet ms';"><span class="Apple-style-span" style="font-size:small;">Ultimately, it usually boils down to agreeing on the </span></span><span class="Apple-style-span" style="font-style: italic;"><span class="Apple-style-span" style="font-family:'trebuchet ms';"><span class="Apple-style-span" style="font-size:small;">chances </span></span></span><span class="Apple-style-span" style="font-family:'trebuchet ms';"><span class="Apple-style-span" style="font-size:small;">of the unacceptable thing happening. If the unacceptable thing is 10% likely to happen, you can probably go ahead. If it's 90% likely to happen, you probably shouldn't. Of course, it also depends on the magnitude of the Bad Thing™ -- if letting gays marry is 10% likely to cause polygamists to be able to marry, that's probably acceptable; if letting gays marry is 10% likely to cause G-d to flatten the Earth with giant fiery fists, that's probably not acceptable. </span></span></span></div><div style="text-align: justify;"><span class="Apple-style-span" style=" "><span class="Apple-style-span" style="font-family:'trebuchet ms';"><span class="Apple-style-span" style="font-size:small;"><br /></span></span></span></div><div style="text-align: justify;"><span class="Apple-style-span" style=" "><span class="Apple-style-span" style="font-family:'trebuchet ms';"><span class="Apple-style-span" style="font-size:small;">Once you've agreed on the chances of Bad Things™, it's just a matter of deciding whether or not we're willing to accept that risk. Tragically for those of us who love rational rigor, this decision is one that's personal and fairly arbitrary, and one that depends a lot on each person's ethical system (a Utilitarian would accept much higher chances of Bad Things™ than would a Kantian, for example).</span></span></span></div><div style="text-align: justify;"><span class="Apple-style-span" style=" "><span class="Apple-style-span" style="font-family:'trebuchet ms';"><span class="Apple-style-span" style="font-size:small;"><br />At the end of the day, we assume all sorts of risks in our lives, both in the long term and in the short term. The argument that "We shouldn't do X because it might have bad consequences" is generally born of a desire to not take any risks at all. It's often a good idea to "play it safe" -- but not always.</span></span></span></div>Peter Kovalskyhttp://www.blogger.com/profile/02427728617984989522noreply@blogger.com0tag:blogger.com,1999:blog-5980455578884702846.post-23504974827308801252009-03-16T16:40:00.000-07:002009-03-20T02:43:37.231-07:00Fallacy of the Week #1To follow up from the previous post concerning the value of "natural"ness, I'd like to talk a little bit about the <a href="http://en.wikipedia.org/wiki/Genetic_fallacy">genetic fallacy</a>.<div><br /></div><div>Put simply, you're committing a genetic fallacy when your argument is that a thing is good now because it was good before or had its origins in something good. An example might be a claim like <blockquote><span class="Apple-style-span" style="font-style: italic;">I know that Jack is a good person because I know his parents, and they're good people.</span></blockquote></div><div>Of course, we can use predicates other than "good" and still be committing a genetic fallacy, e.g:<blockquote><span class="Apple-style-span" style="font-style: italic;">NaCl (table salt) is poisonous because Na is poisonous and Cl is poisonous.</span></blockquote></div><div>It's important to keep in mind that this is a claim about <span class="Apple-style-span" style="font-style: italic;">knowledge </span>(how I know that something is the case) and not one about <span class="Apple-style-span" style="font-style: italic;">causes</span> (why something is the case). The examples provided in the Wikipedia article linked to above are pretty clear cut, but many instances of this fallacy in our everyday lives are more ambiguous. </div><div><br /></div><div>It feels silly and unnatural to us to disclaim our statements as being about knowledge as opposed to causes, so that's something we have to keep an eye out for, not to mention the fact that we often make claims about causes and knowledge simultaneously, as if they were the same thing. We ought to be especially vigilant because it is often the case, as with our friend Jack above, that the claim about causes has merit (it is not unreasonable to claim that being raised by good people causes you to be a good person) while the claim about knowledge does not (it<span class="Apple-style-span" style="font-style: italic;"> is</span> unreasonable to claim that we have knowledge of a person's goodness based on knowledge of his/her parents' goodness, <span class="Apple-style-span" style="font-style: italic;">unless we've already accepted the validity of the causal claim</span>).</div><div><br /></div><div>In the claim that a thing is bad because it is "unnatural," a reverse genetic fallacy is being committed:<blockquote><span class="Apple-style-span" style="font-style: italic;">X is bad because it <span class="Apple-style-span" style="font-style: normal;">does not</span> have its origins in Y, and Y is/was good.</span></blockquote><blockquote><span class="Apple-style-span" style="font-style: italic;">X is good because it </span>does not <span class="Apple-style-span" style="font-style: italic;">have its origins in Y, and Y is/was bad.</span></blockquote> A very obvious example of why this is usually a bad plan:</div><div><blockquote><span class="Apple-style-span" style="font-style: italic;">Murder is good because it does not have its origins in Nazism, and Nazism was bad.</span></blockquote>And a slightly less obviously example:<blockquote><span class="Apple-style-span" style="font-style: italic;">Homosexuality is bad because it does not have its origins in nature, and nature is good.</span></blockquote>Bear in mind that because genetic fallacies are <span class="Apple-style-span" style="font-style: italic;">informal </span>(that is, their form sends up a red flag to reevaluate their merits, but does not automatically disqualify the conclusions), the conclusions they lead to are not always wrong:</div><div><blockquote><span class="Apple-style-span" style="font-style: italic;">This mixture of cyanide and arsenic is poisonous, because cyanide is poisonous and arsenic is poisonous.</span></blockquote></div>Peter Kovalskyhttp://www.blogger.com/profile/02427728617984989522noreply@blogger.com0tag:blogger.com,1999:blog-5980455578884702846.post-53576027686279609412009-03-13T01:56:00.001-07:002009-03-20T02:32:44.460-07:00Unnatural!<blockquote></blockquote><span class="Apple-style-span" style="font-family:'trebuchet ms';"><blockquote></blockquote><blockquote></blockquote><span class="Apple-style-span" style=" "><span class="Apple-style-span" style=" "><span class="Apple-style-span" style="font-size:small;">One argument I hear </span></span><span class="Apple-style-span" style="font-style: italic; "><span class="Apple-style-span" style=" "><span class="Apple-style-span" style="font-size:small;">all the time</span></span></span><span class="Apple-style-span" style=" "><span class="Apple-style-span" style="font-size:small;"> is that something is wrong, or that we should avoid something, or that we should regard something with scorn or scepticism, because it is "unnatural." The most common examples that come to mind are those of homosexuality, contraception, and genetic modification.</span></span></span><span class="Apple-style-span" style="font-size:small;"><br /></span></span><div><span class="Apple-style-span" style="font-family:'trebuchet ms';"><span class="Apple-style-span" style="font-size:small;"><br /></span></span></div><div><span class="Apple-style-span" style="font-family:'trebuchet ms';"><span class="Apple-style-span" style="font-size:small;">This sort of argument faces a whole host of problems.</span></span></div><div><span class="Apple-style-span" style="font-family:'trebuchet ms';"><span class="Apple-style-span" style="font-size:small;"><br /></span></span></div><div><span class="Apple-style-span" style="font-family:'trebuchet ms';"><span class="Apple-style-span" style="font-size:small;">First, it is unclear what constitutes "natural"ness. Is a thing natural simply because it occurs in the world without human intervention? Are </span></span><span class="Apple-style-span" style="font-style: italic;"><span class="Apple-style-span" style="font-family:'trebuchet ms';"><span class="Apple-style-span" style="font-size:small;">only</span></span></span><span class="Apple-style-span" style="font-family:'trebuchet ms';"><span class="Apple-style-span" style="font-size:small;"> those things that occur in the world without human interverntion natural?</span></span></div><div><span class="Apple-style-span" style="font-family:'trebuchet ms';"><span class="Apple-style-span" style="font-size:small;"><br /></span></span></div><div><span class="Apple-style-span" style="font-family:'trebuchet ms';"><span class="Apple-style-span" style="font-size:small;">But let's suppose that we've been provided with a satisfactory definition of "natural." Even so, it is a stretch to claim that "X is wrong because it is unnatural" because </span></span><span class="Apple-style-span" style="font-style: italic;"><span class="Apple-style-span" style="font-family:'trebuchet ms';"><span class="Apple-style-span" style="font-size:small;">regardless of how we define naturalness, </span></span></span><span class="Apple-style-span" style="font-family:'trebuchet ms';"><span class="Apple-style-span" style="font-size:small;">there are many, many things that are unnatural, but which we don't want to write off as being wrong. If our definition of "natural" is very strict, then such unnatural things include tools of any kind. If our definition is very loose, then such unnatural things might include science, government, culture, airplanes, hygiene, music, medicine and so on.</span></span></div><div><span class="Apple-style-span" style="font-family:'trebuchet ms';"><span class="Apple-style-span" style="font-size:small;"><br /></span></span></div><div><span class="Apple-style-span" style="font-family:'trebuchet ms';"><span class="Apple-style-span" style="font-size:small;">But let's suppose further that we've managed to find a definition of "natural" that admits of all of the nice things that we'd like to hang on to, like forks and schools and doctors and movies and string theory and flush toilets. Even still, the fact remains that our category of all things natural contains things that we </span></span><span class="Apple-style-span" style="font-style: italic;"><span class="Apple-style-span" style="font-family:'trebuchet ms';"><span class="Apple-style-span" style="font-size:small;">do </span></span></span><span class="Apple-style-span" style="font-family:'trebuchet ms';"><span class="Apple-style-span" style="font-size:small;">want to write off as being wrong. It's not much of a stretch to suggest that the all 7 of the "deadly sins," which most of us tend to agree are things to be avoided, are pretty natural behaviors -- if they weren't, we wouldn't need to be prohibited against them. As such, the category of "good" or "right" cannot be coextensive with the category of "natural."</span></span></div><div><span class="Apple-style-span" style="font-family:'trebuchet ms';"><span class="Apple-style-span" style="font-size:small;"><br /></span></span></div><div><span class="Apple-style-span" style="font-family:'trebuchet ms';"><span class="Apple-style-span" style="font-size:small;">Another related problem: the things about us as humans that we tend to think of as </span></span><span class="Apple-style-span" style="font-style: italic;"><span class="Apple-style-span" style="font-family:'trebuchet ms';"><span class="Apple-style-span" style="font-size:small;">making us human</span></span></span><span class="Apple-style-span" style="font-family:'trebuchet ms';"><span class="Apple-style-span" style="font-size:small;"> -- things like mercy and forgiveness and law and order -- are arguably unnatural and are essentially understood as such. Mercy is the act of refraining from the natural impulse of wrath. Forgiveness is the act of refraining from the natural impulse of anger. Law and order are the result of willingly and unnaturally submitting to an outside authority, and of refraining from the natural impulses of selfishness and violence. </span></span><blockquote><span class="Apple-style-span" style="font-family:'trebuchet ms';"><span class="Apple-style-span" style="font-size:small;">This particular counterargument only works, of course, when you and the person/people with whom you're arguing share a comparable set of assumptions about things like mercy vs. wrath and humaneness vs. beastliness.</span></span></blockquote></div><blockquote><div></div></blockquote><div><span class="Apple-style-span" style=" "><span class="Apple-style-span" style="font-family:'trebuchet ms';"><span class="Apple-style-span" style="font-size:small;"><br /></span></span></span></div><div><span class="Apple-style-span" style=" "><span class="Apple-style-span" style="font-family:'trebuchet ms';"><span class="Apple-style-span" style="font-size:small;">Now, historically, lots and lots of things have been bludgeoned with the "It's unnatural, so it's wrong" argument. As a rule of thumb, when people say that "X is wrong because it's unnatural," what they really mean to say is that "X is wrong because I'm unaccustomed to it." Which is a very weak reason for making a very strong claim. Everything from women's education/suffrage to interracial marriage to airplanes to James Joyce to rock music has weathered this particular storm.</span></span></span></div><div><span class="Apple-style-span" style=" "><span class="Apple-style-span" style="font-family:'trebuchet ms';"><span class="Apple-style-span" style="font-size:small;"><br /></span></span></span></div><div><span class="Apple-style-span" style=" "><span class="Apple-style-span" style="font-family:'trebuchet ms';"><span class="Apple-style-span" style="font-size:small;">So maybe the best rebuttal is just to say, "Check back in 20 years."</span></span></span></div><div><span class="Apple-style-span" style="font-family:'trebuchet ms';"><blockquote></blockquote></span></div>Peter Kovalskyhttp://www.blogger.com/profile/02427728617984989522noreply@blogger.com1tag:blogger.com,1999:blog-5980455578884702846.post-89934413150124343432009-03-05T23:50:00.000-08:002009-03-13T02:34:54.971-07:00Firsties, etc.<span class="Apple-style-span" style="font-family: 'trebuchet ms';"><span class="Apple-style-span" style="font-size: small;">The purpose behind this blog is, obviously, to subject common arguments to scrutiny. It is not to further any particular agenda -- political, religious, or otherwise. It is also here for our mutual benefaction: you, perhaps, learn something new about argument structure, or how to attack or defend a position you feel strongly about; I, perhaps, learn something new about my own positions on things, or come up with a clever logical move.</span></span><div><span class="Apple-style-span" style="font-family: 'trebuchet ms';"><span class="Apple-style-span" style="font-size: small;"><br /></span></span></div><div><span class="Apple-style-span" style="font-family: 'trebuchet ms';"><span class="Apple-style-span" style="font-size: small;">Regardless, this blog will only be possible in the context of you, the reader, referring me to those arguments that you find relevant or feel strongly about. Or maybe it just bugs you, but you don't quite know why. Or maybe you're really sure that an argument works, and want to make sure. Or maybe you're writing a paper and want to professor-proof your arguments. Send me a link, a document, an email in leetspeak. Whatever.</span></span></div><div><span class="Apple-style-span" style="font-family: 'trebuchet ms';"><span class="Apple-style-span" style="font-size: small;"><br /></span></span></div><div><span class="Apple-style-span" style="font-family: 'trebuchet ms';"><span class="Apple-style-span" style="font-size: small;">If it so happens that I find an argument I don't know what to do with, I'll post it and invite the commenters to help me figure it out.</span></span></div><div><span class="Apple-style-span" style="font-family: 'trebuchet ms';"><span class="Apple-style-span" style="font-size: small;"><br /></span></span></div><div><span class="Apple-style-span" style="font-family: 'trebuchet ms';"><span class="Apple-style-span" style="font-size: small;">Cheers.</span></span></div>Peter Kovalskyhttp://www.blogger.com/profile/02427728617984989522noreply@blogger.com0