{"id":54,"date":"2012-07-11T18:09:00","date_gmt":"2012-07-11T18:09:00","guid":{"rendered":"https:\/\/skepticink.com\/believingbullshit\/2012\/07\/11\/the-strange-case-of-the-rational-dentist\/"},"modified":"2012-07-11T18:09:00","modified_gmt":"2012-07-11T18:09:00","slug":"the-strange-case-of-the-rational-dentist","status":"publish","type":"post","link":"https:\/\/skepticink.com\/believingbullshit\/2012\/07\/11\/the-strange-case-of-the-rational-dentist\/","title":{"rendered":"The Strange Case of The Rational Dentist"},"content":{"rendered":"<p><\/p>\n<div><\/div>\n<div>\n<div style=\"clear: both;text-align: center\"><a href=\"http:\/\/3.bp.blogspot.com\/-0AXa62lOxQw\/T_3Bq4UbdVI\/AAAAAAAAAtg\/XcrsSo3nv_s\/s1600\/Marathon+Man+2.jpg\"><img loading=\"lazy\" decoding=\"async\" border=\"0\" height=\"177\" src=\"http:\/\/3.bp.blogspot.com\/-0AXa62lOxQw\/T_3Bq4UbdVI\/AAAAAAAAAtg\/XcrsSo3nv_s\/s320\/Marathon+Man+2.jpg\" width=\"320\" \/><\/a><\/div>\n<p><span lang=\"EN-US\">[From my book The Philosophy Gym. Apologies for unfixable formatting problems]<\/span><\/div>\n<div><\/div>\n<div><span lang=\"EN-US\">One of the most intriguing of philosophical puzzles concerns other minds. How do you know there are any? Yes, you\u2019re surrounded by living organisms that look and behave much as you do. They even say they have minds. But do they? Perhaps other humans are mindless zombies: like you on the outside, but lacking any inner conscious life, including emotions, thoughts, experiences and even pain. What grounds do you possess for supposing that other humans (including even me) aren\u2019t zombies? Perhaps less than you think.<\/span><\/div>\n<div><\/div>\n<h6>   <span lang=\"EN-US\" style=\"font-size: 12pt\">At the dentist\u2019s<\/span><\/h6>\n<div><\/div>\n<div><span lang=\"EN-US\">The scene: a dentist\u2019s surgery. Finnucane is prostrate in the dentists chair, his mouth stuffed with cottonwool balls. A balding and bespectacled dentist is poking at a filling at the back of Finnucane\u2019s mouth.<\/span><\/div>\n<div><\/div>\n<div><span style=\"font-family: Arial\">Dentist: Is it safe?\u2026.Is it safe?<\/span><\/div>\n<div><span style=\"font-family: Arial\">Finnucane: Aaaargh!<\/span><\/div>\n<div><span style=\"font-family: Arial\">Dentist. No. It\u2019s not safe. It\u2019s dropped out altogether. Very inferior quality filling. I shall replace it. I\u2019ll give you some pain-killer. Even though I don\u2019t believe you feel pain.<\/span><\/div>\n<h4>   <span lang=\"EN-US\" style=\"font-family: Arial\">\u00a0<\/span><\/h4>\n<div><span lang=\"EN-US\">Finnucane can\u2019t believe what he\u2019s hearing.<\/span><\/div>\n<div><\/div>\n<div><span style=\"font-family: Arial\">Dentist: That\u2019s right. I don\u2019t believe you feel pain. In fact <i>I don\u2019t believe you have a mind at all<\/i>.<\/span><span lang=\"EN-US\" style=\"font-family: Arial\"><\/span><\/div>\n<div><\/div>\n<div><span lang=\"EN-US\">Finnucane squints.<\/span><\/div>\n<div><\/div>\n<div><span style=\"font-family: Arial\">Dentist: Why? Because I am <i>The Rational Dentist<\/i>, that\u2019s why. I\u2019m not like those other dentists. I believe only what it\u2019s reasonable to believe. Open wide.<\/span><\/div>\n<div><\/div>\n<div><span lang=\"EN-US\">The dentist takes a long silver syringe from a tray and slowly inserts the needle into the soft flesh at the back of Finnucane\u2019s mouth. Beads of moisture appear across Finnucane\u2019s forehead and his eyes widen in panic.Gradually the pain starts to fade.<\/span><\/div>\n<div><\/div>\n<div><span lang=\"EN-US\" style=\"font-family: Arial;font-size: 12pt\">Dentist: Oh, I know what those other dentists say. They say [in mocking tones], \u201cBut <i>of course<\/i> I am justified in believing that my poor patient has a mind. I poke his gums with one of these. And observe. He sweats. He writhes. He cries out. Surely I have all the evidence I could possibly want that I\u2019m dealing with another conscious being like myself. He even <i>tells me<\/i> he\u2019s in pain.\u201d<\/span><\/div>\n<div><\/div>\n<div><span lang=\"EN-US\">The dentist puts down the syringe and stares coldly at Finnucane.<\/span><\/div>\n<div><\/div>\n<div><span lang=\"EN-US\" style=\"font-family: Arial;font-size: 12pt\">Dentist: I\u2019m not so easily fooled. All this so-called \u201cevidence\u201d is totally unconvincing.<i><\/i><\/span><\/div>\n<div><\/div>\n<div><b><span lang=\"EN-US\" style=\"font-size: 12pt\">The private mind<\/span><\/b><\/div>\n<div><\/div>\n<div><span lang=\"EN-US\" style=\"font-size: 12pt\">Finnucane is astonished. How could anyone fail to believe that others have minds? We would ordinarily consider such a person to be mad, dangerous even. Yet the dentist insists he is merely being rational. He peers at Finnucane.<\/span><\/div>\n<div><\/div>\n<div><span lang=\"EN-US\" style=\"font-family: Arial;font-size: 12pt\">Dentist: You\u2019re looking quizzical. Allow me to explain. My argument is simple. First, I cannot <i>directly<\/i> witness what goes on in another\u2019s mind. I can observe their outward behaviour. But I can\u2019t observe what goes on inside their mind, if they have one. Their experiences, beliefs, emotions, pains and so on \u2013 all are hidden away. A mind is a private place. The most private place of all.<\/span><\/div>\n<div><\/div>\n<div style=\"text-indent: 36pt\">It seems the dentist is correct. Suppose, for example, that you take a bite out of a lemon. You experience an intense bitter taste. You are directly and immediately aware that that you are having this experience. While others may experience the same sort of taste, it\u2019s impossible for you to verify this directly. You cannot, as it were, enter into another\u2019s mind and observe what they are experiencing along with them. The experiences of others are necessarily hidden.<span lang=\"EN-US\">\u00a0<\/span><\/div>\n<div style=\"text-indent: 36pt\"><\/div>\n<div style=\"text-indent: 36pt\"><span lang=\"EN-US\">The dentist fumbles with his drill. Finnucane watches nervously. <\/span><\/div>\n<div><\/div>\n<div><span lang=\"EN-US\" style=\"font-family: Arial;font-size: 12pt\">Dentist: Oh, I can guess what you would say were you mouth not stuffed with cotton wool balls: \u201cBut you <i>don\u2019t have to<\/i> rely on my behaviour. What if you were to scan what\u2019s going on in my brain? What if you put a fibre-optic probe in there, so that you could see my pain neurones firing? Then you would have direct evidence that I\u2019m in pain.\u201d That\u2019s what you would say, correct?<\/span><\/div>\n<div><\/div>\n<div><span lang=\"EN-US\">Finnucane nods.<\/span><\/div>\n<div><\/div>\n<div><span lang=\"EN-US\" style=\"font-family: Arial;font-size: 12pt\">Dentist: Wrong again! I <i>still<\/i> wouldn\u2019t have <i>direct<\/i>evidence. For how do I know that this sort of neurone firing is accompanied by consciousness, by feelings of pain, in other human beings? Perhaps it\u2019s only in my own case that brain activity is accompanied by mental activity. Open wide again.<\/span><\/div>\n<div><\/div>\n<div><b><span lang=\"EN-US\">The argument from analogy<\/span><\/b><span lang=\"EN-US\"><\/span><\/div>\n<div><\/div>\n<div><span lang=\"EN-US\">The dentist places a plastic suction tube in Finnucane\u2019s mouth and begins to drill.<\/span><\/div>\n<div><\/div>\n<div><span lang=\"EN-US\" style=\"font-family: Arial\">Dentist: Now the other dentists, they admit all this. They say, [again, mockingly] \u201cOkay, I admit you can\u2019t have direct access to what\u2019s going on in the mind of another. But it doesn\u2019t follow that you don\u2019t have good reason<i> <\/i>to believe others have minds. You do. Their <i>behaviour<\/i> provides you with excellent grounds for supposing this. You<\/span><span style=\"font-family: Arial\">know in your <i>own<\/i> case that when you\u2019re pricked sharply, you feel pain. You also know that when you experience that pain, you\u2019re liable to flinch and yell. When you observe other human beings, you find that when they are pricked sharply, they also flinch and yell. Doesn\u2019t that provide you with good grounds for supposing they experience pain too?\u201d<\/span><\/div>\n<div><\/div>\n<div>The argument just outlined by the dentist is called the <i>argument from analogy<\/i>. At first sight, the argument looks highly plausible. Most of us, if asked to justify our belief in the existence of other minds, would no doubt offer something similar. But as the dentist is well aware, there\u2019s a notorious difficulty with it.<span lang=\"EN-US\"><\/span><\/div>\n<div><\/div>\n<h3>   <span lang=\"EN-US\">A problem with the argument from analogy<\/span><\/h3>\n<div><\/div>\n<div><span style=\"font-family: Arial;font-size: 12pt\">Dentist: Open wider. Now of course I understand this argument. I\u2019m not a fool. But I am afraid the logic is faulty. For you see, these other dentists are guilty of making an<i> unwarranted generalization<\/i>.<i><\/i><\/span><\/div>\n<div style=\"margin-left: 36.0pt;text-indent: -36.0pt\"><\/div>\n<div>Finnucane is struggling to hear what the dentist is saying over the noise of the drill.<\/div>\n<div style=\"margin-left: 36.0pt;text-indent: -36.0pt\"><\/div>\n<div><span style=\"font-family: Arial;font-size: 12pt\">Dentist: Let me explain why. Suppose I cut open one thousand cherries and find every single one has a stone in the middle. Surely I\u2019m now justified in <i>generalizing<\/i>. Surely I\u2019m now justified in believing that <i>all<\/i>cherries have stones in the middle. Admittedly, I might be wrong. But the one thousand cherries that I have observed surely give me <i>pretty<\/i> <i>good reason<\/i> to believe that all cherries have stones, reason sufficient to justify my belief. Correct?<\/span><\/div>\n<div><\/div>\n<div>Finnucane nods.<\/div>\n<div><\/div>\n<div><span style=\"font-family: Arial;font-size: 12pt\">Dentist: <\/span><span lang=\"EN-US\" style=\"font-family: Arial;font-size: 12pt\">But now suppose that, instead of basing my inference on an observation of a thousand cherries, I base it on an observation of <i>just<\/i><i>one<\/i>. Then my inference would be very shaky, wouldn\u2019t it? My one cherry may provide some slight<i> <\/i>evidence in support of the claim that all cherries have stones, but it\u2019s surely not enough to justify my making that generalization. For all I know, some cherries may have stones and some not, just as, for example, some animals have male sex organs and some not. This may be a very unusual cherry, just as an oyster with a pearl inside is very unusual. In order to justify my generalization, I surely need to look inside very many cherries. Correct?<\/span><\/div>\n<div><span lang=\"EN-US\" style=\"font-family: Arial\">Finnucane: Uh huh.<\/span><\/div>\n<div><span lang=\"EN-US\" style=\"font-family: Arial;font-size: 12pt\">Dentist: But now think about the argument of the other dentists. It, too, is a generalization based on just a single observation. I notice that, in my own case, when I am pricked sharply and I flinch and yell, this behaviour is accompanied by pain. I am then supposed to conclude that when others are pricked sharply and they flinch and yell, they must be in pain too. Yes?<\/span><\/div>\n<div><span lang=\"EN-US\" style=\"font-family: Arial;font-size: 12pt\">Finnucane: Uh huh.<\/span><\/div>\n<div><span lang=\"EN-US\" style=\"font-family: Arial;font-size: 12pt\">Dentist: But one can\u2019t justify the belief that others have minds on the basis of such flimsy evidence. This inference is surely no less suspect than the inference based on a single cherry. To infer that others have minds on such grounds is wholly unwarranted. It\u2019s irrational. Being The Rational Dentist, I refuse to accept an irrational conclusion.<\/span><span lang=\"EN-US\" style=\"font-size: 12pt\"><\/span><\/div>\n<div><\/div>\n<h3>   <span lang=\"EN-US\">Scepticism about other minds<\/span><\/h3>\n<div><\/div>\n<div style=\"text-indent: 36.0pt\"><span style=\"font-size: 12pt\">The dentist appears to be right. I can\u2019t directly observe what goes on in the mind of another, or even that others have minds. So how might my belief in their existence be justified? Only, it seems, by the argument from analogy. But the argument from analogy is, in effect, a generalization based on a single observed case. So it\u2019s just as shaky as the inference based on the single cherry.<\/span><\/div>\n<div style=\"text-indent: 36.0pt\"><span style=\"font-size: 12pt\">The conclusion to which I seem forced, then, is that I am <i>not<\/i>justified in believing that there are any minds other than my own. And if I am not justified in believing there are minds other than my own, then presumably I can\u2019t be said to <i>know<\/i> that there are minds other than my own, for presumably it is a condition of knowing that there are other minds that I be justified in supposing my belief is true.<\/span><\/div>\n<div style=\"text-indent: 36.0pt\"><span style=\"font-size: 12pt\">This is a <i>sceptical<\/i> conclusion: it says that I don\u2019t know what I might think I know. This particular form of scepticism \u2013 scepticism about knowledge of other minds \u2013 has a long history. And of course, like most sceptical conclusions, it\u2019s highly perplexing, for it runs entirely contrary to common sense. (You will find other forms of scepticism discussed in other chapters: chapter XX \u201cBrainsnatched\u201d discusses scepticism about the external world and chapter XX \u201cWhy Expect the Sun to Rise Tomorrow?\u201d focuses on scepticism about the unobserved.)<\/span><\/div>\n<div style=\"text-indent: 36.0pt\"><span style=\"font-size: 12pt\">So the sceptic leaves me in a paradoxical situation. On the one hand, it seems I have little if any reason to suppose there are other minds. On the other hand, this conclusion is so counter-intuitive that I suspect the sceptic must have gone wrong somewhere along the way. The challenge I face, then, is to identify what, if anything, is wrong with the sceptic\u2019s argument.<\/span><\/div>\n<div><\/div>\n<div><span style=\"font-size: 12pt\">[[TEXT BOX: <b>THINKING TOOLS: How not to respond to scepticism.<\/b> People commonly make one of two mistakes when presented with such seemingly compelling sceptical arguments.<\/span><\/div>\n<div>First, they just dig in and dogmatically assert that of course they know that their\u2019s is not the only mind \u2013 it\u2019s \u201cjust obvious\u201d that other minds exist. This is hardly an intelligent response, however. Sure, we feel certain that there are other minds. But simply to appeal to such feelings when presented with a sceptical argument is a mistake. What has previously struck us as \u201cjust obvious\u201d has in many cases turned out to be wrong. That the Sun revolves about a stationary Earth, for example, was at one time considered by almost everyone to be \u201cjust obvious\u201d. Consider how irritatingly irrational were those who continued brutely to insist that it is \u201cjust obvious\u201d the Earth is stationary even after they had been presented with powerful evidence to the contrary. To similarly dismiss the sceptic\u2019s argument would be no less irritatingly irrational.<\/div>\n<div style=\"text-indent: 36.0pt\"><span style=\"font-size: 12pt\">The second mistake is blithely to accept the sceptic\u2019s conclusion because one has underestimated its strength. It can be tempting to say, \u201cYes, yes, I agree with you that I can\u2019t be <i>certain<\/i> that there are other minds. I admit I don\u2019t <i>know<\/i> they exist. But still, it is <i>pretty likely<\/i>that they exist, isn\u2019t it?\u201d<\/span><\/div>\n<div style=\"text-indent: 36.0pt\"><span style=\"font-size: 12pt\">This is simply to misunderstand the argument. The sceptic is <i>not<\/i>arguing that, because there is room for doubt about the existence of other minds, therefore one can\u2019t know that they exist. That would be a rather feeble argument, an argument based on the dubious assumption that one can\u2019t be said to know something unless it has been established beyond all doubt. The dentist\u2019s argument is much stronger. The dentist argues that not only is there <i>room for doubt<\/i> about the existence of other minds, there is actually <i>little if any reason<\/i> to suppose they exist. This is a much more dramatic conclusion, a conclusion that few if any of us really accept. END OF TEXT BOX]<\/span><\/div>\n<div><\/div>\n<h3>   Is the dentist rational, or insane?<\/h3>\n<div><\/div>\n<div><span lang=\"EN-US\">The dentist leans over Finnucane again, his antiseptic-smelling breath fogging Finnucane\u2019s glasses. He starts to work the new amalgum filling into the hole he has drilled in Finnucane\u2019s molar.<\/span><\/div>\n<div><\/div>\n<div><span style=\"font-family: Arial\">Dentist: Perhaps you would say, \u201cBut why, if you don\u2019t believe I have a mind, do you go to all the trouble of speaking to me, of administering anaesthetic, and so on?\u201d The answer is: because I find that if I administer anaesthetic my patients don\u2019t moan and thrash about. I use it to control behaviour. And I speak to them because I find it enables me to have some control over their behaviour. And also because it amuses me.<\/span><\/div>\n<div><\/div>\n<div>Finnucane raises his eyebrows.<\/div>\n<div><\/div>\n<div><span style=\"font-family: Arial\">Dentist: And of course, it is <i>possible<\/i> that you have a mind. I don\u2019t deny that. So I give you the benefit of the doubt. I administer anaesthetic <i>just in case<\/i>.<\/span><\/div>\n<div><\/div>\n<div><span lang=\"EN-US\">Finally, after a few minutes, the filling is complete. <\/span>Finnucane leans forward groggily, cotton wool balls tumbling from his mouth. He spits a bloody gobbet into the stainless steel tray. No longer at the dentist\u2019s mercy, Finnucane finally feels free to speak his mind.<\/div>\n<div><\/div>\n<div><span style=\"font-family: Arial\">Finnucane: Good grief. <\/span><span lang=\"EN-US\" style=\"font-family: Arial\">You\u2019re not the rational dentist. You\u2019re the <i>mad<\/i>dentist. Anyone who, like you, refuses to believe that others have minds, is, frankly, <i>ill<\/i>! <\/span><\/div>\n<div><span lang=\"EN-US\" style=\"font-family: Arial\">Dentist: It\u2019s true that I\u2019m often accused of suffering from some sort of mental illness. But my accusers are fools. For the truth is that I am merely being rational. I believe what it is reasonable to believe. And what is wrong with that?<\/span><\/div>\n<div><span lang=\"EN-US\" style=\"font-family: Arial\">Finnucane: You\u2019re insane! <\/span><\/div>\n<div><span lang=\"EN-US\" style=\"font-family: Arial\">Dentist: It\u2019s ironic, don\u2019t you think, that you accuse me of being insane, when I\u2019m the rational one?<\/span><span lang=\"EN-US\"><\/span><\/div>\n<div><\/div>\n<div style=\"text-indent: 36.0pt\"><span style=\"font-size: 12pt\">The dentist is a bizarre character, frightening even<a href=\"http:\/\/www.blogger.com\/blogger.g?blogID=1905686568472747305#_edn1\" name=\"_ednref1\" title=\"\"><span><span><span>[i]<\/span><\/span><\/span><\/a>. We would find profoundly disturbing anyone who genuinely refused to believe that others have minds. In fact, scepticism about other minds is, for anyone not in the grip of some sort of mental illness, surely impossible to believe. The kind of disengagement from others required permanently to maintain the view that, for all you know, they are merely mindless automata is surely the hallmark of a kind of insanity.<\/span><\/div>\n<div style=\"text-indent: 36.0pt\"><span style=\"font-size: 12pt\">And yet, for all that, the dentists\u2019s seemingly \u201cinsane\u201d sceptical position may be the rational position to adopt. Perhaps he is right that we\u2019re the \u201cirrational\u201d ones. The onus is clearly on us to explain why belief in the existence of other minds is justified.<\/span><\/div>\n<div><span style=\"font-size: 12pt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Let\u2019s now take a look at two well-known attempts to solve this puzzle. The first involves defending the argument from analogy.<\/span><\/div>\n<div><\/div>\n<div><b><span style=\"font-size: 12pt\">1: Defending the argument from analogy<\/span><\/b><\/div>\n<div><\/div>\n<div style=\"text-indent: 36.0pt\"><span style=\"font-size: 12pt\">In response to the sceptical argument, you might point out that sometimes we <i>are<\/i> justified in generalizing on the basis of a single observed instance.<\/span><\/div>\n<div style=\"text-indent: 36.0pt\"><span style=\"font-size: 12pt\">Suppose I decide to take my Kawazuki K1000 stereo apart to find out how it works.<\/span><\/div>\n<div><\/div>\n<div style=\"text-indent: 36.0pt\"><span style=\"font-size: 12pt\">[ILLUSTRATE: ME DISMANTLING STEREO.]<\/span><\/div>\n<div><\/div>\n<div><span style=\"font-size: 12pt\">I investigate its inner mechanism and establish how everything functions. Wouldn\u2019t I then be justified in concluding that <i>all<\/i> stereos of that make and model have the same sort of internal mechanism? Surely I would. <i>Yet this would be a generalization based on a single observed instance<\/i>: my own stereo. And if we are sometimes justified in generalizing on the basis of a single observed case, then perhaps we are also justified in doing so when it comes to other minds. In which case the argument from analogy is sound after all.<\/span><\/div>\n<div><span style=\"font-size: 12pt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 This is an interesting suggestion. But there are problems with it. True, it seems I am justified in believing that all Kawazuki K1000 stereos have such-and-such an internal mechanism on the basis of having opened up just one. But I am only justified because I am in possession of considerable<i> background information<\/i> about such devices and their inner workings. For example, I know that my Kawazuki K1000 stereo is a piece of machinery mass-produced for profit. I know that it takes a considerable investment in time and money to develop an inner mechanism of this sort. So I know that the Kawazuki Corporation is hardly likely to have bothered developing lots of different internal mechanisms to do the very same job. It\u2019s because I possess this sort of background information that I am justified in believing that all the other Kawazuki K1000 stereos have the same sort of inner mechanism.<\/span><\/div>\n<div><span style=\"font-size: 12pt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 However, <i>I am not warranted in generalizing on the basis of a single observed case where such background information is missing<\/i>. For example, if, for all I knew, each Kawazuki K1000 stereo might just as easily have been made, not by a single manufacturer, but by one of thousands of entrants in a competition to come up with internal machinery that would make these boxes marked \u201cKawazuki K1000\u201d behave in just the way they do \u2013 raising the volume when this knob is turned, changing the radio station when that button is pressed, and so on \u2013 then of course I am no longer warranted in supposing that the other boxes will contain the same internal machinery.<\/span><\/div>\n<div><span style=\"font-size: 12pt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 S<\/span><span lang=\"EN-US\" style=\"font-size: 12pt\">o the question is: <\/span><span style=\"font-size: 12pt\">do I possess <\/span><span lang=\"EN-US\" style=\"font-size: 12pt\">the <\/span><span style=\"font-size: 12pt\">kind<\/span><span lang=\"EN-US\" style=\"font-size: 12pt\"> of background information necessary to justify my inference about the existence of other minds?<\/span><\/div>\n<div>It seems not. In the stereo example, my inference depends on my background knowledge about mass-produced machines and their internal mechanisms. But in the case of other minds, I don\u2019t appear to possess this sort of background knowledge. <i>For my mind is radically unlike anything else I have ever experienced<\/i>. For me to conclude that, as I have a mind, so too must other humans is akin to me entering a strange land, discovering that the first flower I examine contains a fairy, and then concluding that so too must all the other flowers. What I discover inside the first flower is so strange and unusual that no such inference is warranted.<\/div>\n<div>It seems, then, that I\u2019m still not justified in believing that there are minds other than my own.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/div>\n<div><\/div>\n<h3>   2: The logical behaviourist approach<\/h3>\n<div><\/div>\n<div style=\"text-indent: 36.0pt\"><span style=\"font-size: 12pt\">Here is a different kind of solution to the puzzle of other minds, the solution offered by the <i>logical behaviourist<\/i>.<\/span><\/div>\n<div style=\"text-indent: 36.0pt\"><span style=\"font-size: 12pt\">Consider the solubility of a sugar cube. Solubility is what is known as a <i>dispositional<\/i> property \u2013 its possession by a sugar cube just consists in the fact that <i>if<\/i> the cube were placed in water under the right circumstances, <i>then<\/i> it would dissolve. Indeed, it\u2019s <i>true by definition<\/i> that something is soluble just in case it is disposed to dissolve in water, in just the same way that it is true by definition that all stallions are male or that all triangles have three sides.<\/span><\/div>\n<div>Now some philosophers have suggested that mental properties are also dispositional properties. Indeed, some suggest that all talk about minds and what goes on in them can be translated, without residue, into talk about behavioural dispositions. This is the position of the logical behaviourist.<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Take pain, for example. To say that someone is in pain <i>just is<\/i>, according to the logical behaviourist, to say that they are physically disposed to behave in certain ways \u2013 to flinch, yell out, and so on. It\u2019s true by definition that those in pain are disposed to behave like that. This is not something we need to <i>discover<\/i>.<\/div>\n<div><\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Logical behaviourism, if true, would neatly solve two classical philosophical problems concerning the mind. First of all, it would explain how material objects, such as our bodies, can possess minds. For an object to have a mind is just for it to possess the right sort of behavioural dispositions. That\u2019s all there is to it. So we no longer have to make room for mysterious and ghostly extra \u201csomethings\u201d \u2013\u00a0 minds \u2013\u00a0 in the world<i>, in addition<\/i> <i>to<\/i> physical objects and their various physical dispositions. The \u201cghost in the machine\u201d, to borrow the behaviourist Gilbert Ryle\u2019s (1900-1976) memorable phrase, disappears.<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 The other classical conundrum that would be solved is, of course, the one we have been discussing here: the problem of explaining how we come by knowledge of the existence of other minds. According to logical behaviourism, what makes the problem of other minds seem so intractable is a certain mistaken conception of what minds are like. If we think of the mind as the elusive \u201cghost in the machine\u201d, then we are immediately struck by the problem of explaining how we establish the existence of this \u201cghost\u201d in others. For all we can observe of other human beings is their outward behaviour. But if Ryle is right, the mind is not a peculiar ghostly \u201csomething\u201d <i>hidden behind<\/i> the outward behaviour. Rather, the mind <i>just is<\/i> a highly complex set of behavioural dispositions.<\/div>\n<div style=\"text-indent: 36.0pt\">Just as there is nothing particularly difficult about establishing what dispositional properties \u2013 such as solubility \u2013 a sugar cube has, so, if Ryle is right, there is nothing particularly difficult about establishing that human beings have minds. You need only establish how they are disposed to behave, and that can be done quite easily. Just as you can have good grounds for supposing that sugar cubes are soluble, so you can have good grounds for supposing that others feel pain.<\/div>\n<div><\/div>\n<h1>   <b><span style=\"font-size: 12pt;font-style: normal\">Attack of the zombies<\/span><\/b><\/h1>\n<div><\/div>\n<div style=\"text-indent: 36.0pt\"><span style=\"font-size: 12pt\">Has the logical behaviourist solved the problem of other minds? No. Unfortunately, logical behaviourism is not a particularly plausible theory of the mind. Perhaps the most serious difficulty with it is raised by the<i>conceptual possibility of<\/i> <i>zombies<\/i>.<\/span><\/div>\n<div style=\"text-indent: 36.0pt\"><span style=\"font-size: 12pt\">In the movies, zombies drool and stumble about. The kind of zombies I have in mind are rather different: their behaviour is exactly the same as that of a minded person. Philosophical zombies, as I shall call them, behave perfectly normally. However, like movie zombies, philosophical zombies have no minds: they are, to borrow the dentist\u2019s ugly phrase, \u201cmere meat machines\u201d.<\/span><\/div>\n<div style=\"text-indent: 36.0pt\"><\/div>\n<div style=\"margin-left: 36.0pt\"><span style=\"font-size: 12pt\">[ILLUSTRATE: \u201cPROUST\u201d AND \u201cZOMBIE PROUST\u201d: BOTH SAY: \u201cYOU KNOW: THESE LITTLE CAKES REMIND ME OF SOMETHING\u201d]<\/span><\/div>\n<div style=\"text-indent: 36.0pt\"><\/div>\n<div style=\"text-indent: 36.0pt\"><span style=\"font-size: 12pt\">Imagine a world physically exactly like this one but populated by zombies. This imaginary world even contains even a zombie version of you: just like you physically, but all is dark within. Of course, it\u2019s not remotely likely that this zombie world actually exists. But (and this is the key point) we can at least <i>make sense<\/i> of the possibility of such a world.<\/span><\/div>\n<div style=\"text-indent: 36.0pt\"><span style=\"font-size: 12pt\">Contrast the suggestion that there might be a world that contain non-male stallions or a world that contains triangles with four sides. These worlds don\u2019t even make sense. For of course it is a definitional truth that stallions are male and that triangles have only three sides. Zombie world makes sense in the way that four-sided triangle world and non-male stallion world don\u2019t.<\/span><\/div>\n<div style=\"text-indent: 36.0pt\"><span style=\"font-size: 12pt\">But here\u2019s the problem for logical behaviourism. If logical behaviourism is true, then it should no more make sense to suggest that zombie world might exist than it does to suggest that four-sided triangle world might exist. Just as it\u2019s true by definition that a triangle has three sides, so it is supposed by the logical behaviourist to be true by definition that any creature that such-and-such behavioural dispositions has a mind. Zombies, being creatures that lack minds but have the same behavioural dispositions as ourselves, should be ruled out by definition.<\/span><\/div>\n<div style=\"text-indent: 36.0pt\"><span style=\"font-size: 12pt\">But we have just seen that zombies are <i>not<\/i> ruled out be definition. But then it follows that logical behaviourism is false. And if logical behaviourism is false, then it can\u2019t be used to solve the puzzle of other minds. The puzzle remains.<\/span><\/div>\n<div><\/div>\n<div style=\"text-indent: 0cm\"><b><span lang=\"EN-US\">\u00a0Conclusion<\/span><\/b><\/div>\n<div style=\"text-indent: 0cm\"><span lang=\"EN-US\">Most of us wo<\/span>uld say that Finnucane\u2019s dentist is irrational, insane even. But perhaps it is we who are irrational, not the dentist. Can you rationally defend your belief that there are mind\u2019s other than your own?<\/div>\n<div style=\"text-indent: 0cm\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 I don\u2019t yet see how.<\/div>\n<div><\/div>\n<div><b><span style=\"font-size: 12pt\">What to read next?<\/span><\/b><span style=\"font-size: 12pt\"><\/span><\/div>\n<div><\/div>\n<div><span style=\"font-size: 12pt\">Chapter XX \u201cBrain-snatched\u201d and chapter XX \u201cWhy Expect the Sun to Rise Tomorrow?\u201d discuss other varieties of scepticism: scepticism about the external world and scepticism about the unobserved.<\/span><\/div>\n<div><\/div>\n<div><b><span style=\"font-size: 12pt\">Further reading:<\/span><\/b><span style=\"font-size: 12pt\"><\/span><\/div>\n<div><\/div>\n<div style=\"margin-left: 18.0pt;text-indent: -18.0pt\"><span style=\"font-family: Symbol;font-size: 12pt\">\u00b7<span>\u00a0\u00a0\u00a0\u00a0\u00a0 <\/span><\/span><span style=\"font-size: 12pt\">Anita Avramides, <i>Other Minds<\/i> (London: Routledge, 2001).<\/span><\/div>\n<div style=\"margin-left: 18.0pt;text-indent: -18.0pt\"><span style=\"font-family: Symbol;font-size: 12pt\">\u00b7<span>\u00a0\u00a0\u00a0\u00a0\u00a0 <\/span><\/span><span style=\"font-size: 12pt\">K. T. Maslin, <i>An Introduction to the Philosophy of Mind<\/i> (Cambridge: Polity, 2001), chpt. 8.<\/span><\/div>\n<div><\/p>\n<hr align=\"left\" size=\"1\" width=\"33%\" \/>\n<div>\n<div><a href=\"http:\/\/www.blogger.com\/blogger.g?blogID=1905686568472747305#_ednref1\" name=\"_edn1\" title=\"\"><span><span lang=\"EN-US\"><span><span lang=\"EN-US\">[i]<\/span><\/span><\/span><\/span><\/a><span lang=\"EN-US\"> <\/span>In fact I have made the dentist slightly scarier than a sceptic need be. But<span lang=\"EN-US\"> I have tried not to over do it. I didn\u2019t want the dentist to appear deliberately cruel and sadistic. After all, if the dentist clearly got<\/span> some sort of perverse pleasure out of inflicting pain on Finnucane, that would suggest he did after all believe Finnucane had a mind worth torturing.<span lang=\"EN-US\"><\/span><\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>[From my book The Philosophy Gym. Apologies for unfixable formatting problems] One of the most intriguing of philosophical puzzles concerns other minds. How do you know there are any? Yes, you\u2019re surrounded by living organisms that look and behave much as you do. They even say they have minds. But do they? Perhaps other humans [&hellip;]<\/p>\n","protected":false},"author":13,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-54","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/skepticink.com\/believingbullshit\/wp-json\/wp\/v2\/posts\/54","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/skepticink.com\/believingbullshit\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/skepticink.com\/believingbullshit\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/skepticink.com\/believingbullshit\/wp-json\/wp\/v2\/users\/13"}],"replies":[{"embeddable":true,"href":"https:\/\/skepticink.com\/believingbullshit\/wp-json\/wp\/v2\/comments?post=54"}],"version-history":[{"count":0,"href":"https:\/\/skepticink.com\/believingbullshit\/wp-json\/wp\/v2\/posts\/54\/revisions"}],"wp:attachment":[{"href":"https:\/\/skepticink.com\/believingbullshit\/wp-json\/wp\/v2\/media?parent=54"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/skepticink.com\/believingbullshit\/wp-json\/wp\/v2\/categories?post=54"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/skepticink.com\/believingbullshit\/wp-json\/wp\/v2\/tags?post=54"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}