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		<title>Footnotes on Epicycles</title>
		<link>http://laser.fontmonkey.com/foe/index.php</link>
		<description><![CDATA[the philosophical foofaraw of P.D. Magnus]]></description>
		<copyright>Copyright 2012, P.D. Magnus</copyright>
		<managingEditor>P.D. Magnus</managingEditor>
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			<title>Debriefing: clickers, being, and bad faith</title>
			<link>http://laser.fontmonkey.com/foe/index.php?entry=entry120508-090703</link>
			<description><![CDATA[My last day of teaching for the Spring semester was yesterday. As usual, I asked some debriefing questions.<br /><br />Although I always take student questions in my <i>Introduction to Logic</i>, there are more than a hundred students. So the reality is that there are just ten or so students who raise their hands with any frequency. This semester, I tried to get more involvement by using clickers. Each student buys their own remote, and I ask multiple choice questions during lecture. They get credit both for participation and for getting right answers.<br /><br />The only question I asked yesterday was how they felt about clickers, whether I should use them next time I teach the course.<br /><pre>good- use them again  79%<br />meh - who cares?      13%<br />bad - don&#039;t use again  9%<br /></pre><br />From my point of view, the clickers were an improvement over the take-home quizzes that they replaced. So I guess I&#039;ll use them again next time.<br /><br />In my <i>Existentialism</i> class, I asked some variant of <a href="index.php?entry=The-trends-on-Kant-futures" >my usual debriefing questions</a>. For of the texts we had read in class, I asked whether students considered them essential or dispensable; that is, should I definitely include them next time I teach existentialism, definitely leave them out, or otherwise. I didn&#039;t take a separate show of hands for the &#039;otherwise&#039; response, and students were allowed as many yays and boos as they wanted.<br /><pre>                                    yay     boo<br />No Exit                    (Sartre)  17      0<br />ex&#039;ism as humanism         (Sartre)  15      4<br />Being &amp; Time            (Heidegger)  14      3<br />Being &amp; Nothingness        (Sartre)  27      0<br />Ego and its Rel&#039;n to Others(Marcel)   3      5<br />Ethics of Ambiguity   (de Beauvoir)  20      1<br />Is Bad Faith Bad? (Hazlett&amp;Feldman)   0     13<br /></pre><br />The Hazlett&amp;Feldman was only added at the end because we had a couple of days free. So I am not surprised that nobody considered it essential. I was a bit surprised that so many students were enthusiastic for jettisoning it.<br /><br />I was also surprised by the enthusiasm for Heidegger. Perhaps it is because I sternly warned them at every opportunity, from day one until we finished with Being&amp;Time, that Heidegger is a terribly poor writer and that the book is wickedly hard to read. So it became a kind of challenge, and if they teased any meaning out of it then it was a victory.]]></description>
			<category>teaching</category>
			<guid isPermaLink="true">http://laser.fontmonkey.com/foe/index.php?entry=entry120508-090703</guid>
			<author>P.D. Magnus</author>
			<pubDate>Tue, 08 May 2012 16:07:03 GMT</pubDate>
			<comments>http://laser.fontmonkey.com/foe/comments.php?y=12&amp;m=05&amp;entry=entry120508-090703</comments>
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			<title>Indexing from planets to mallards</title>
			<link>http://laser.fontmonkey.com/foe/index.php?entry=entry120503-084507</link>
			<description><![CDATA[I have completed the index for my forthcoming book, which is to appear in September.<br /><br />The item referenced the most is &quot;Boyd, Richard&quot;.]]></description>
			<category>developments</category>
			<guid isPermaLink="true">http://laser.fontmonkey.com/foe/index.php?entry=entry120503-084507</guid>
			<author>P.D. Magnus</author>
			<pubDate>Thu, 03 May 2012 15:45:07 GMT</pubDate>
			<comments>http://laser.fontmonkey.com/foe/comments.php?y=12&amp;m=05&amp;entry=entry120503-084507</comments>
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			<title>That groovy cat Fine</title>
			<link>http://laser.fontmonkey.com/foe/index.php?entry=entry120328-103105</link>
			<description><![CDATA[A recent <a href="http://www.3ammagazine.com/3am/metaphysical-kit/" >interview with 3:AM magazine</a> introduces Kit Fine as &quot;a groovy metaphysician&quot;.<br /><br />Reading it makes me reprise my musing on the nature of metaphysics.<br /><br />When Fine identifies metaphysics in a general way and in terms of some exemplary metaphysical questions, it&#039;s pretty standard fare: &quot;Metaphysics is the philosophical study of the general nature of reality. It asks questions like: what is the nature of space and time?; what is the relation between mind and body?; do abstract objects exist or is everything concrete?&quot;<br /><br />Much of the interview is about the methods which are appropriate in metaphysics. Fine maintains that metaphysics, like mathematics, is <em>a priori</em>. It&#039;s just that metaphysics is about more than mathematical structure.<br /><br />The interviewer asks at one point about experimental philosophy. Fine replies, &quot;I am not especially enamored of my armchair and would be happy to leave it if I thought that it would be of help in answering the questions of interest to me. But I fail to see how it could be. ... How could asking the folk possibly be of any help in answering these questions? Physicists don’t ask the folk to look down telescopes and mathematicians don’t ask folk to assess the plausibility of their axiom. And so why should it be any different for philosophy?&quot;<br /><br />He takes the question to pose a dilemma between (a) metaphysics as a priori intuition mongering which philosophers can conduct from their armchair and (b) metaphysics as polling the folk about their intuitions; that is, between an aristocracy of philosophers&#039; armchairs and a pure democracy of everybody&#039;s armchairs.<br /><br />[a brief digression]<br /><br />It is odd that both sides accept the &#039;armchair&#039; idiom. Suppose that metaphysics is (as Fine maintains) a priori in the way that math is. The stereotypical workplace of a mathematician is a blackboard with formulas and theorems, where things need to be derived and worked out. There are interesting questions as to how much working something out on a blackboard is like working something out in a lab, but neither is at all like sitting in an armchair silently ruminating.<br /><br />[end digression]<br /><br />The opposition between (a) and (b) is a false dilemma, because there is an obvious (c): Metaphysics must be informed by our best accounts of what the world is actually like.<br /><br />Consider Fine&#039;s specimen question about the nature of space and time. This is not something to be settled from the armchair, because the question is partly empirical. One can work out topology at a blackboard, but one cannot know the topology of the universe or even a corner or the universe without going out to look around a bit. So it&#039;s not an a priori issue. Moreover, the intuitions of the <em>hoi polloi</em> seem like the wrong kind of data to consult. Common sense embodies solutions to problems of navigating around human environments, sure, but such environments are only a small part of <em>everything</em>.<br /><br />Option (c) in this case does not mean that physicists or cosmologists say everything that there is to say about space and time. Rather, any serious enquiry into the nature of space and time must reckon with the physics.<br /><br />A similar lesson applies to the relation between mind and body. Neuroscience, psychology, and cognitive science are importantly relevant. And they provide a resource which goes beyond the armchair without asking the man on the street for his opinion.<br /><br />Fine makes the claim that philosophers&#039; intuitions are better honed than the intuitions of ordinary folk. Perhaps that&#039;s true, but the third way makes it mostly irrelevant.]]></description>
			<category>ideas</category>
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			<author>P.D. Magnus</author>
			<pubDate>Wed, 28 Mar 2012 17:31:05 GMT</pubDate>
			<comments>http://laser.fontmonkey.com/foe/comments.php?y=12&amp;m=03&amp;entry=entry120328-103105</comments>
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			<title>On the use and abuse of philosophical jargon</title>
			<link>http://laser.fontmonkey.com/foe/index.php?entry=entry120306-115648</link>
			<description><![CDATA[I wrote my dissertation on the underdetermination of theory by data. I managed to turn material from my thesis into almost ten free standing papers, but despite some perfunctory efforts I never turned my work on underdetermination into a book. I thought I might finally write that book when I went to Pittsburgh in Fall 2010.<br /><br />About the same time, I started working on natural kinds. I expected to write a couple of papers on the topic. Yet the project grew larger, and I ended up writing a book on natural kinds during my semester of sabbatical.<br /><br />Both &#039;underdetermination&#039; and &#039;natural kinds&#039; are items of philosophical jargon which are usually presupposed to be well-defined and univocal. Yet both are also used in a tremendous variety of ways, and the literature includes authors&#039; unwittingly using the terms in different ways.<br /><br />&#039;Underdetermination&#039; is often taken to be a label for the so-called Duhem-Quine Problem but also for the Problem of Empirically Equivalent Rival Theories. It is also sometimes taken to include riddles of induction (Hume&#039;s, Goodman&#039;s, or both) or quotidian cases of curve-fitting. These are very different things. So one possible diagnosis is just that the word is used in a confused way.<br /><br />In my thesis, I found a way to characterize underdetermination so that all of these different issues turned out to be varieties of the same thing. The basic idea is that a case of underdetermination involves a set of rival theories, a standard for what will count as responsible choice between them, and a scope of circumstances in which responsible choice is impossible. The disparate things travelling under the banner &#039;underdetermination&#039; can be obtained by filling in these three parameters in different ways.<br /><br />This was kind of a neat trick, but the problem was there was really no useful work done by having the big umbrella term. The analysis shows merely that there is a way to make sense of &#039;underdetermination&#039; talk, not that you really ought to have it as a term in your vocabulary. Many specific varieties of underdetermination have important consequences, so I wrote papers about those. I could not see how to write one sensible book covering all the disparate stuff. <br /><br />&#039;Natural kind&#039; is similarly used as a label for many different things: categories which support induction, categories with essences, categories that ought to appear in a scientific account of the world, categories which we rigidly designate, and so on. Again, these are very different things. So you might just throw up your hands.<br /><br />Yet the conception of &#039;natural kind&#039; which I defend in the book does not vindicate all these different presumptions. I do not treat natural kinds as needing to have essences, and I am neutral on the question of how natural kind <em>terms</em> refer. So what I offer is more an explication than an analysis.<br /><br />I think that &#039;natural kind&#039; in the sense which I defend in the book does important philosophical work. It is useful for framing questions about whether Pluto is really a planet, about the reality of species, and so on.<br /><br />I had not even explicitly noticed that my work on underdetermination had headed into a cul-de-sac. It was only after I had completed the manuscript for my book that I realized that I really do not think that &#039;underdetermination&#039; is an especially helpful term to have in our philosophical vocabulary but that &#039;natural kind&#039; is.<br /><br />To put the point concisely: &#039;Underdetermination&#039; is not a natural kind for philosophy of science, but &#039;natural kind&#039; is.<br /><br />Even more concisely: Yay explication and &#039;natural kind&#039;! Boo analysis and &#039;underdetermination&#039;!]]></description>
			<category>ideas</category>
			<guid isPermaLink="true">http://laser.fontmonkey.com/foe/index.php?entry=entry120306-115648</guid>
			<author>P.D. Magnus</author>
			<pubDate>Tue, 06 Mar 2012 19:56:48 GMT</pubDate>
			<comments>http://laser.fontmonkey.com/foe/comments.php?y=12&amp;m=03&amp;entry=entry120306-115648</comments>
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			<title>Philosophy of science as it was taught to John Rawls</title>
			<link>http://laser.fontmonkey.com/foe/index.php?entry=entry120225-123843</link>
			<description><![CDATA[[crossposted at <a href="http://itisonlyatheory.blogspot.com/2012/02/philosophy-of-science-as-it-was-taught.html" >It&#039;s Only a Theory</a>]<br /><br />My colleague Jon Mandle has been looking at John Rawls 1950 doctoral dissertation, <i>A Study in The Grounds of Ethical Knowledge</i>. Jon asked me about a section in which Rawls contrasts ethical theory and scientific theory. The philosophy of science that he presumes is really just background. Yet he discusses what is now often called the Duhem-Quine Problem, a couple of years before Quine&#039;s &quot;Two Dogmas of Empiricism&quot;. So where did Rawls get it from?<br /><br />I did not have a good answer to this, beyond the obvious suggestion. So I decided to share the interesting bit here.<br /><br /> Some historical context: After coming back from service in World War II in the mid 1940s, Rawls began graduate work at Princeton. He spent a year at Cornell, where he interacted with Norman Malcolm and Max Black. Although he did not defend his disseration until February 1950, it was completed by about Fall 1948. (He had funding which was contingent on him still being a student.) So the bit here reflects philosophy of science as he was taught it at Princeton and Cornell in the mid to late 1940s.<br /><br />The obvious answer, suggested by the footnote, is that he got his philosophy of science primarily from Max Black at Cornell. If you have other ideas as to who he might have learned philosophy of science from, please mention them in the comments.<br /><br /><blockquote>One crucial distinction between the use of a theory in natural science, as opposed to its use in ethics, is that in the former the subject matter is the empirical laws expressed by different causal relations, and whenever the theory does not explain these the theory must be modified; whereas in the latter, the subject matter is the rational judgements of reasonable men, and while we have defined them to be coercive over a theory in the preliminary stage of inquiry, they can be altered, if reasonable men wish to do so; and they may want to change them should they discover that a few recognized judgments are not in harmony with some general principles which explicate most of their other judgments, and which seem to be justifiable. While an explication could hardly cause us to change all our judgments, it may, after we have reflected upon it, cause us to change some of our opinions. Therefore, not only may an ethical theory provide an answer where there is a genuine conflict, and so where there is no opinion at all; but it may actually change some accepted appraisal which was originally considered a part of the subject matter.<br /><br />Thus an adequate and comprehensive ethical theory may have a control over its data which we generally do not allow to a theory in a natural scienoe. We cannot think that physical processes, having found that Newton&#039;s theory explained much of their behavior, would voluntarily agree to act in a manner conformant to its predictions. But in ethical theory this is just what may, and does, happen. Consider, for exanple, the argument of a reformer. He points out that an accepted moral judgment, or an accepted pattern of moral behavior, actually conflicts with a principle which explicates most of our best and soundest opinions. He appeals to us to recognise that such and such a judgment or pattern of conduct violates the principles which underly our common morality. He urges us to bring those discordant judgments and modes of conduct into line. This we can do; and this is a point at which the final use of an ethical theory may be so different from the final use of a theory in the natural sciences.<br /><br />It may be objected to this difference that it is not so great as I have stated it. Scientific theories control their data, and exercise a coercive power over observations. For example, if an observer were to report that he had seen a body grow hotter in surroundings of lower temperature; or that he had seen all the molecules of a gas collect in a small volume at one end of a container; or that he had watched a heavy body float up in the air; - we should, on the basis of well-confirmed theories, strongly doubt his observations. We should use the evidenced strength of certain physical theories to argue that it is more probable that the observer is mistaken than that the recorded events have happened as he describes. A theory may be so generally accepted that it will throw out numerous reports on similar grounds. This is why, for example, miracles of one kind or another are not scientifically acceptable. It is more likely that the report of a miracle is false than that the theory it contradicts is mistaken. Naturally there is a limit as to how far a theory can discard observations relevant to it. Otherwise, it would not be a theory at all, but an opinion stubbornly maintained in the face of contradicting reports. But, by and large, the general rule obtains that a widely successful theory will serve to discard the few and scattered observations against it; and this is because we take it as more probable that the reports are mistaken than that the theory is incorrect. A theory is refuted by showing that there is a general <i>law</i> which is directly contrary to it; and a few random reports are not sufficient to show this.[footnote; see below]<br /><br />Thus, while it is true that physical theory may control its data, the relation is entirely different from that which may exist between an ethical theory and its data. In the physical case, it is a question of weighing probabilities, and, in view of a satisfactory theory, there must be strong doubt as to whether a reported event contradictory to the theory eer occurred. But not so with an ethical theory: No one doubts that the common sense jugments contradicting an explication happen every day. We egrant, of course, their existence, but demand, in the light of the explication, that they be changed. This can be done, men being what they are. Ethical theory can have a distinctive control over its data; and it is part of its value that it can have this control, since it then can serve as a means for the reform and improvement of common morality.<br /><br /><br />[footnote:] The subject matter of a natural science like physics is, primarily, <i>laws</i>, which are stated, when the science is developed, in mathematical terms. If not, they may be called routines. See the discussion in <i>Campell, Physics; the elements, Ch. 4</i>. Or, as <i>Feigl</i> says, the &#039;Erkenntnisziel&#039; of physics in the &#039;gesetzliche Gerust dar Welt&#039;, of <i>Theorie und Erfahrung in die Physik</i>, 16-18. Thus to refute a theory we must establish a law contradicting it. <i>Popper</i>, in <i>Logik der Forschung</i>, made an attempt to avoid the overstrict criterion of meaning then held by the Vienna Circle by urging that a theory be considered meaningful if it could be conclusively falsified. This test, he thought could be carried. out strictly, since he believed that a finite number of observations could refute a theory. But <i>Black</i>, in a review, exposed the fallacy: &quot;...no scientific law is rejected on the basis of a finite number of contrary observations unless it is believed that the number of such observations could be indefinitely extended by any competent observer under similar conditions; strictly unique experiments, however discordant with theory, are neglected because their uniqueness guarantees their irrelevance: their importance is merely that of the inexplicable.&quot; 45 Mind 105 (1936).</blockquote>]]></description>
			<category>ideas</category>
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			<author>P.D. Magnus</author>
			<pubDate>Sat, 25 Feb 2012 20:38:43 GMT</pubDate>
			<comments>http://laser.fontmonkey.com/foe/comments.php?y=12&amp;m=02&amp;entry=entry120225-123843</comments>
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			<title>Nature, don&#039;t think I won&#039;t cut you</title>
			<link>http://laser.fontmonkey.com/foe/index.php?entry=entry120222-081547</link>
			<description><![CDATA[When I learned about the recent collection <em>Carving nature at its joints: Natural kinds in metaphysics and science</em>, I had to change the title of my forthcoming book. After much discussion <a href="comments.php?y=11&amp;m=12&amp;entry=entry111216-073404" >here</a>, on other blogs, and on Google+, and after some back and forth with the publisher, my book will be <em>Scientific enquiry and natural kinds: From planets to mallards</em>. (A better title, I think. So the rigamarole was worth it.)<br /><br />I learned about the <em>Carving</em> collection when I was asked to review it for <em>Notre Dame Philosophy Reviews</em>. I love open-access journals in general and NDPR in particular, so I was glad to do it. My <strike>hatchet job</strike> review has now been published <a href="http://ndpr.nd.edu/news/28944-carving-nature-at-its-joints-natural-kinds-in-metaphysics-and-science/" >over on the NDPR site</a>.]]></description>
			<category>developments</category>
			<guid isPermaLink="true">http://laser.fontmonkey.com/foe/index.php?entry=entry120222-081547</guid>
			<author>P.D. Magnus</author>
			<pubDate>Wed, 22 Feb 2012 16:15:47 GMT</pubDate>
			<comments>http://laser.fontmonkey.com/foe/comments.php?y=12&amp;m=02&amp;entry=entry120222-081547</comments>
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			<title>Grounding metaphysics</title>
			<link>http://laser.fontmonkey.com/foe/index.php?entry=entry120210-073906</link>
			<description><![CDATA[In a recent article,* Karen Bennett poses and attempts to answer a metaphysical dilemma about the relationship between ontological <em>grounding</em> and the <em>fundamental</em>. Grounding is a relation between basic and less basic facts or stuff. For example: a series of notes grounds a melody, the physical grounds the mental (according to physicalists), and so on. Fundamental things and facts are ones which are absolutely basic, i.e. ungrounded.<br /><br />Is the grounding relation itself fundamental?<br /><br />First, suppose the answer is yes. Then consider some grounding relation, like that physical states ground my sadness. It is <em>ex hypothesi</em> a fundamental fact. So there are fundamental facts that involve my sadness, even though sadness is not a fundamental notion. That can&#039;t be.<br /><br />Second, suppose the answer is no. Then there must be some further fact or stuff which grounds physical states grounding my sadness. Regress ensues.<br /><br />Bennett&#039;s own strategy is to argue that the regress is stopped by the nature of the grounding relation. I have little to say about that. Instead, I want to thnk about some different replies.<br /><br />A strategy which Bennett considers but passes over is to reject <em>grounding</em>. This would mean that everything which exists is metaphysically fundamental. As she puts it, the world would be ontologically flat. She writes, &quot;I have no knockdown argument against the claim that the world is flat. But every fiber of my being cries out in protest.&quot; Crying fibers are like incredulous stares, but I think it would be a bad turn to say that everything is necessarily fundamental. If that were so, it would not be clear what the hell &#039;fundamental&#039; was supposed to mean. It must at least have a possible contrast to be sensible.<br /><br />A related strategy is to reject <em>fundamentality</em>. Bennett considers this only in a footnote and objects:<br /><blockquote>I truly think it is near impossible - certainly a bad idea - to do away with fundamentality talk altogether. Everyone, even those who reject grounding, should be able to claim that some things are more fundamental than others. (Good luck doing philosophy if you can&#039;t.) [fn 9]</blockquote><br />There is something funny about this reply. She is right to say that we ought to be able to say that &quot;some things are more fundamental than others.&quot; For example: individuals are more fundamental than trios, subatomic particles are more fundamental than atoms, and so on. However, this comparative notion &#039;more fundamental than&#039; does not require that we can say of anything that it is utterly fundamental. That notion of absolute fundamentality is one I can do without. I accept only the comparative notions of grounding and more-fundamental-than. This dissolves Bennett&#039;s dilemma, because without the utterly fundamental there is no way to pose the worry about grounding.<br /><br />One may object to my suggestion: It is possible to define the monadic &#039;fundamental&#039; in terms of the relations. Let &#039;A is fundamental&#039; mean &#039;There does not exist an X such that X grounds A&#039; or &#039;There does not exist an X such that X is more fundamental than A&#039;.**<br /><br />The problem with the objection is that the existential quantifier in the definition must be unrestricted. On the usual accounts, like Sider&#039;s, unrestricted quantification is itself a fundamental notion. By refusing to accept the notion of fundamentality, I am also refusing to countenance unrestricted quantification. So my suggestion eliminates the resources required for the objection.<br /><br />Although the fibres of metaphysicians&#039; being might cry out, rejecting fundamentality does not make it impossible for me to do philosophy. Insofar as I care about grounding or more-fundamental-than in the first place, it is to consider particular cases. For example: What&#039;s the relationship between the mental and the physical? the musical and the acoustic? kinds and individuals? These questions can be answered in terms of the relation. It seems to me, in fact, that a term &#039;utterly fundamental&#039; does not help me with such questions whatsoever.<br /><br /><br />* &#039;By Our Bootstraps&#039;, <em>Philosophical Perspectives</em>, 25(1), 2011.<br />** This objection is readily available. Bennett suggests this argument in her essay. Ted Sider made it explicitly to a similar suggestion in the Q&amp;A at the UAlbnay Grad Student Conference last Spring.]]></description>
			<category>ideas</category>
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			<author>P.D. Magnus</author>
			<pubDate>Fri, 10 Feb 2012 15:39:06 GMT</pubDate>
			<comments>http://laser.fontmonkey.com/foe/comments.php?y=12&amp;m=02&amp;entry=entry120210-073906</comments>
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			<title>What&#039;s the opposite of philosophically conservative?</title>
			<link>http://laser.fontmonkey.com/foe/index.php?entry=entry120204-134215</link>
			<description><![CDATA[In summarizing his philosophical approach to the photographer Steve Pyke, David Lewis said, &quot;I am philosophically conservative: I think philosophy cannot credibly challenge either the positive convictions of common sense or the established theses of the natural sciences and mathematics.&quot;*<br /><br />This seems like an odd thing to say, and I suspect that it summarizes why David Lewis&#039; work has always made me a little uneasy. He conceives of philosophy as doing something <em>separate</em> and <em>outside</em> ordinary or scientific enquiry. Such an approach makes metaphysics a matter of window dressing our beliefs, without any possible influence on what the main doxastic inventory is.<br /><br />Of course, this kind of conservatism is not unique to Lewis. I gave a job talk once and, during the question and answer period, an epistemologist in the audience objected to my argument on the grounds that it might lead us to disagree with scientists about some things and (he said) he would not want to tell scientists that they were wrong. The best reply to such an objection: But what about when scientists are wrong? It would be perverse not to point that out.**<br /><br />Diametrically opposed to Lewis&#039; approach is a kind of eliminativist naturalism according to which responsible philosophy is just science that happens to be done in a department called &#039;Philosophy&#039;. Quine is the posterboy for such an approach. This kind of eliminativism is conservative in its own way, because it means that there is nothing that philosophy as such can add to science. There ends up being no philosophy as such at all.<br /><br />A natural middle position is to say that philosophers typically address different questions than scientists do. Moreover, the methods appropriate to those questions are not identical to methods appropriate to the natural sciences. There is no sharp boundary between the scientific and the philosophical (Quine is right about that) but there is sufficient difference on either side of the boundary that the existence of philosophy departments is not just as arbitrary administrative fact about universities. Yet the porous nature of the boundary means that the enquiries can have things to say to one another.<br /><br />Philosophy of science must accept science as for the most part OK. If it yielded total, utter scepticism, then it would stop being philosophy of science and becomes something else. (Mysticism, maybe.) But the qualifier &#039;for the most part&#039; is important. Philosophers can call into question parts of science. Philosophers of science might even challenge and overturn some canonical examples of good science; what they can&#039;t do is overturn <em>all</em> of them.<br /><br /><br />A further aside: It&#039;s odd that Lewis invokes the &quot;convictions of common sense&quot;, as if common sense consists primarily of a paddock of inviolate beliefs. As <a href="http://www.fecundity.com/job/paper.php?item=reidsdefense" >I have argued elsewhere</a> it is better to think of common sense as a commitment to giving prima facie trust to certain methods and inferences. For example, <em>seeing x</em> is prima facie reason to believe that <em>x</em> exists. The same holds for the sciences: They are in the first place a matter of method rather than a matter of conviction.<br /><br /><br />* HT: <a href="http://upbphilosophy.blogspot.com/2012/01/david-lewis-philosophical-conservative.html" >Steinblog</a>.<br />** I do not recall what answer I actually gave. I recall being shocked by the objection, and I might just have said &quot;Really?!?&quot;]]></description>
			<category>ideas</category>
			<guid isPermaLink="true">http://laser.fontmonkey.com/foe/index.php?entry=entry120204-134215</guid>
			<author>P.D. Magnus</author>
			<pubDate>Sat, 04 Feb 2012 21:42:15 GMT</pubDate>
			<comments>http://laser.fontmonkey.com/foe/comments.php?y=12&amp;m=02&amp;entry=entry120204-134215</comments>
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			<title>No clever title, this</title>
			<link>http://laser.fontmonkey.com/foe/index.php?entry=entry120113-231209</link>
			<description><![CDATA[Here is a despairing rant about the cost of textbooks and how my attempts to do something about it have been frustrated by bullshit:<br /><br />I wrote <a href="http://www.fecundity.com/logic/" >forall x</a> because existing logic textbooks were ridiculously expensive and were rapidly reissued in new editions so as to kill the market for cheaper, used copies. My book is written to be a physical book. It has practice problems, solutions in the back, reference tables, and content which is best accessed by thumbing back and forth between various sections. So I allowed students to buy it as a course packet, paying only the printing cost.<br /><br />Because other people beyond just my students might want to use it, I made it available for download on the internet. Faculty at dozens of schools have used it as a course text, and lots of people have used it for independent study. To reiterate, electronic availability was just for distribution to the broader world.<br /><br />When the copy shop across the street from campus closed, I let the campus bookstore sell the course packet. The first semester I did this, they charged a reasonable $10. The second semester, they jacked that up to $20 without letting me know. So I started using the copy center on campus instead. Last year, the copy center closed. The only place that will sell course packets of campus is several miles away, and students grouse if I ask them to schlepp over there.<br /><br />So for this coming semester, I asked the campus bookstore to determine how much they would charge. The answer: $27.15. For 160 pages. That are covered by an open license. I was told, &quot;That price is solely based on production costs.&quot;<br /><br />My reply: &quot;The course packet service you are using simply lies about production costs. It&#039;s the worst kind of bullshit.&quot;<br /><br />So I am just going to point students to the PDF and encourage them to print their own copy. Many of them won&#039;t, which will be a mistake. They would do better in the course if they had the textbook in an accessible form. Working practice problems on scratch paper is easier with a workbook than in front of a computer screen. But they could pay 15 cents a page for printing and still save money over what the bookstore would have charged.]]></description>
			<category>forall x, teaching</category>
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			<author>P.D. Magnus</author>
			<pubDate>Sat, 14 Jan 2012 07:12:09 GMT</pubDate>
			<comments>http://laser.fontmonkey.com/foe/comments.php?y=12&amp;m=01&amp;entry=entry120113-231209</comments>
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			<title>Two data points on brevity</title>
			<link>http://laser.fontmonkey.com/foe/index.php?entry=entry120105-085405</link>
			<description><![CDATA[Regarding <a href="index.php?entry=entry111009-132251" >the lengths of things that I&#039;ve written</a>, the manuscript for the unstably named book on natural kinds is about 75K words. My dissertation was just 43K words.]]></description>
			<category>trivia</category>
			<guid isPermaLink="true">http://laser.fontmonkey.com/foe/index.php?entry=entry120105-085405</guid>
			<author>P.D. Magnus</author>
			<pubDate>Thu, 05 Jan 2012 16:54:05 GMT</pubDate>
			<comments>http://laser.fontmonkey.com/foe/comments.php?y=12&amp;m=01&amp;entry=entry120105-085405</comments>
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