04/18/2014
Other Minds, by John Wisdom, Chapter 5: Basil Blackwell (pub), 1965
[This is a brief summary]
In this chapter, which is thoroughly set in the context of the previous ones, White asserts that it is in principle, that is either logically or metaphysically, impossible to know another mind. This seems to be agreement with Black, the skeptic, but instead it is taken to be a pointless statement. White (and Wisdom) believe it isn't meaningless, but it is silly, or having no point to talk about. The paper starts with re-hashing the lesson from the failed attempt at telepathy from the last chapter: that even if a question has sense, and even if you can even describe what would affirm or negate the proposition, if you can't figure out a way to test (affirm/negate) the proposition, the question might still be "unreal" (pg123). Hence Gray's claim that the mind of another is hitherto invisible but could be discoverable is taken to be refuted.
The alternative to something so-far invisible is something invisible by nature, or in principle, which is what Black asserted in the first place. (pg123-4) Before White takes up this possibility, one final option is considered: that knowledge of another mind wouldn't be sensory but somehow some kind of "direct" knowledge (pg124-5). White rejects this because he sees it as not categorically different from "knowledge of future behavior from present behavior" (pg125-9) White somehow takes sharing direct knowledge of one mind to be on the same continuum as seeing a physical object, like a dagger (pg126). And this is disqualified from knowledge of a mind, due to White's "disinclination" (pg126-7). Or, rather, White puts words into Black's mouth that this isn't really knowledge of another's mind (pg127) since it is akin to predictions of future behavior due to shared (public) inputs (and Black affirms it on pg129). Thus if there isn't sensory knowledge of another's mind (ch IV) and there isn't direct knowledge of another's mind (ch V), then knowledge of another's mind is in-principle impossible, or the mind of another is by-nature invisible.
The main thrust of the argument is put by the thing-in-itself advocate Brown, who interrupts to assert there is some special way of knowing, but not of actual mental conditions but only of appearances of them: the infallible and direct way of knowing is knowledge of appearances, not necessarily of mental facts. Mental facts like "being in love" are known indirectly as well, though the first-personal perspective has a source of information that the 3rd-personal perspective may not share. White goes through what he considers to be the many cases of indirect knowledge (pg130-1), and then Gray challenges Brown to lay out his argument, which Brown does (pg133-5). What Brown amounts to saying is thus: our knowledge of our own minds comes from direct, infallible access to content-ful appearances [a pain, footly!], which leads us to indirect belief about our bodies [My foot nerves are twitching in pain], which can of course be fallible [it was a pain, but it wasn't in the foot].
Having laid out this picture, Brown claims that direct knowledge of the appearances of another's mental contents is possible (perhaps using telepathy). White asserts that it is an "absurd idea" (pg135), and that knowledge of another mind is impossible. This apparent agreement with Black confuses Gray, but White goes on to argue that it is necessarily impossible, thus far less threatening than it originally appeared (pg135-6). Black confesses that he did not realize that his statement was necessarily true when he made it, but nevertheless he was referring to what he now acknowledges is a necessary truth (pg136-9). White sums up the argument, put by Brown, but put back into an absurdity or a paradox, by claiming that knowledge, if taken to be of the sort that Brown (and, by extension, Black) think it is, is not applicable to not only other minds, but not applicable to the future, the past, even our own bodies, and, perhaps, finally, the whole world of things (pg140).
4/11/14
Wisdom, John - Other Minds IV
04/11/2014
Other Minds, by John Wisdom, Chapter 4: Basil Blackwell (pub), 1965
[This is a brief summary]
This chapter is a continuation from the previous conversation that has been taking place between three fictitious personas, each with their own perspective on knowledge of other minds. In this chapter another character, Brown, who appears to believe in "noumenal bread"(pg102) is briefly introduced, however much of this chapter is a re-description and refinement of what was previously laid out. After some preliminary recap, Gray argues that there is a difference in knowledge-by-inference between an acknowledged, in-principle invisible germ and one that is sought but "hitherto" undetectable given our current methods (pg91). This is meant to be an analogy for mental states, which aren't, Gray says, "defined as detectable though their effects" (pg91). This leaves open the possibility of future discovery of mental states, directly somehow.
Brown briefly interjects that even if there is no more to be done to ascertain whether S is P, isn't there still a further question about whether S really is P? Here it seems the other three disagree (mainly Gray, and to some extent Black) and there is an interlude about the meaninglessness of asking whether S is P after all that is logically and conceivably be done to ascertain the relation has been exhausted. (pg91-5) The upshot of this discussion is Black revealing his view of philosophy (pg93-4) and White his (pg95-6). Black believes that there is no fine line between physical possibility, logical possibility, and conceiveability; White calls the further questioning from Brown "unpoetic" and "intolerable", though meaningful (pg97-101).
White picks up on the difficulty of understanding differences in beliefs without differences in expectations (pg100-1). [I see an analogy between these comments and some (I think mistaken) formulations of Goodman's Grue problem, see pg100] Subsequently, White offers an initial possibility of directly discovering Smith's mental states, using some kind of new technology, or telepathy (pg 103). The trouble here is that it is unclear this is actually possible and not a kind of regress of indirect knowledge, as White explores (pg103-109).
Black rejects the possibility of a regress but still asserts that knowledge of another mind "directly" would not be sensory but instead be a kind of extended introspection, similar to a heightened ability (but unfortunately picks another sensory ability as an analogy: someone with a heightened sense of touch being able to detect differences in weights between feathers that no one else can detect (pg109-10). This kicks off a discussion about how one would know that this extra-sensory power was reliable and so on (pg110-116), which comes back to the issue that Brown initially posed, of there being something to "weight" that is further than how things react on scales, and feel by comparison, etc (pg115). White decries this absurd result and lists the steps which got them there (pg116). Black takes back his analogy on pg 122 but insists on a difference between introspection and sensation relating to other minds.
Other Minds, by John Wisdom, Chapter 4: Basil Blackwell (pub), 1965
[This is a brief summary]
This chapter is a continuation from the previous conversation that has been taking place between three fictitious personas, each with their own perspective on knowledge of other minds. In this chapter another character, Brown, who appears to believe in "noumenal bread"(pg102) is briefly introduced, however much of this chapter is a re-description and refinement of what was previously laid out. After some preliminary recap, Gray argues that there is a difference in knowledge-by-inference between an acknowledged, in-principle invisible germ and one that is sought but "hitherto" undetectable given our current methods (pg91). This is meant to be an analogy for mental states, which aren't, Gray says, "defined as detectable though their effects" (pg91). This leaves open the possibility of future discovery of mental states, directly somehow.
Brown briefly interjects that even if there is no more to be done to ascertain whether S is P, isn't there still a further question about whether S really is P? Here it seems the other three disagree (mainly Gray, and to some extent Black) and there is an interlude about the meaninglessness of asking whether S is P after all that is logically and conceivably be done to ascertain the relation has been exhausted. (pg91-5) The upshot of this discussion is Black revealing his view of philosophy (pg93-4) and White his (pg95-6). Black believes that there is no fine line between physical possibility, logical possibility, and conceiveability; White calls the further questioning from Brown "unpoetic" and "intolerable", though meaningful (pg97-101).
White picks up on the difficulty of understanding differences in beliefs without differences in expectations (pg100-1). [I see an analogy between these comments and some (I think mistaken) formulations of Goodman's Grue problem, see pg100] Subsequently, White offers an initial possibility of directly discovering Smith's mental states, using some kind of new technology, or telepathy (pg 103). The trouble here is that it is unclear this is actually possible and not a kind of regress of indirect knowledge, as White explores (pg103-109).
Black rejects the possibility of a regress but still asserts that knowledge of another mind "directly" would not be sensory but instead be a kind of extended introspection, similar to a heightened ability (but unfortunately picks another sensory ability as an analogy: someone with a heightened sense of touch being able to detect differences in weights between feathers that no one else can detect (pg109-10). This kicks off a discussion about how one would know that this extra-sensory power was reliable and so on (pg110-116), which comes back to the issue that Brown initially posed, of there being something to "weight" that is further than how things react on scales, and feel by comparison, etc (pg115). White decries this absurd result and lists the steps which got them there (pg116). Black takes back his analogy on pg 122 but insists on a difference between introspection and sensation relating to other minds.
4/4/14
Wisdom, John - Other Minds III
04/04/2014
Other Minds, by John Wisdom, Chapter 3: Basil Blackwell (pub), 1965
[This is a brief summary]
In this chapter, a continuation from the dialogue from the previous chapter, a new character, "Grey" is introduced. Grey wants to convince White that Black's skeptical position is not warranted, nor is the externalistic meaning of "S believes that P" exhausts it. Grey tries to tell White that we know what is in other minds by analogy to our own, similar to how we know by analogy about other in-principle invisible phenomena. Grey uses the example of germs, which are known to be causes of many maladies. If the measles fit all the criteria for a germ-based disease but, upon inspection, no germs were to be found, Grey argues that we could still reasonably believe the disease was caused by germs, just invisible ones. This is the analogy Grey tries to give to White regarding mental states and other minds.
White complains early (pg62) that there are three replies to the problems of induction, or the "step" taken from evidence of P to asserting Q: Skeptic: 'don't take the step', Phenomenalist: 'there is no step to take, don't worry', Intuitionist: 'there is another mode of knowing that Q from P; it's ok'. White argues that merely stating: 'we know Q from P, but we can't justify it' is not an answer, but merely restates the problem.
After Grey gives his analogy of the invisible germ case, White talks at length of the 'queerness' (pg72) of the analogy argument: that while we might agree that our knowledge is by analogy, it is a weird sort of analogy since it relies on "the peculiar grammar of the expression of 'invisible things'" (pg72-3). The knowledge by analogy argument, White claims, is "satisfying" (pg74) and "soothing" (pg79) but not a justification since the satisfaction is "unstable" (pg74). The instability comes as follows: looking for the visible germs in a measles patient seems to be the right thing to do using the argument by analogy: measles is germ-caused. But, after no germs are found, to say it is in-principle invisible germs is to go a further step-- to move the goal posts-- to change the analogy (pg74-8).
White agrees that perhaps it is somehow "correct" to use analogy to argue for other minds, but there is something "misleading or tiresome" (pg75) about it. White tries to summarize the way the argument by analogy fails on pg 80-81, by claiming that using normal inductive reasoning to answer skeptical arguments either allows for unintelligible or false premises, or just builds into the grammar a "logical principle" that would not take the form of induction (pg81). Later in the chapter, White argues that Grey is close to simply re-stating the initial conditions that are taken to give evidence, in other words, collapsing the meaning of "will be colorblind" to "will fail the relevant tests" (pg83-5). Grey ends the chapter by trying to salvage the argument by analogy by saying the measles/invisible germs analogy wasn't apt.
Other Minds, by John Wisdom, Chapter 3: Basil Blackwell (pub), 1965
[This is a brief summary]
In this chapter, a continuation from the dialogue from the previous chapter, a new character, "Grey" is introduced. Grey wants to convince White that Black's skeptical position is not warranted, nor is the externalistic meaning of "S believes that P" exhausts it. Grey tries to tell White that we know what is in other minds by analogy to our own, similar to how we know by analogy about other in-principle invisible phenomena. Grey uses the example of germs, which are known to be causes of many maladies. If the measles fit all the criteria for a germ-based disease but, upon inspection, no germs were to be found, Grey argues that we could still reasonably believe the disease was caused by germs, just invisible ones. This is the analogy Grey tries to give to White regarding mental states and other minds.
White complains early (pg62) that there are three replies to the problems of induction, or the "step" taken from evidence of P to asserting Q: Skeptic: 'don't take the step', Phenomenalist: 'there is no step to take, don't worry', Intuitionist: 'there is another mode of knowing that Q from P; it's ok'. White argues that merely stating: 'we know Q from P, but we can't justify it' is not an answer, but merely restates the problem.
After Grey gives his analogy of the invisible germ case, White talks at length of the 'queerness' (pg72) of the analogy argument: that while we might agree that our knowledge is by analogy, it is a weird sort of analogy since it relies on "the peculiar grammar of the expression of 'invisible things'" (pg72-3). The knowledge by analogy argument, White claims, is "satisfying" (pg74) and "soothing" (pg79) but not a justification since the satisfaction is "unstable" (pg74). The instability comes as follows: looking for the visible germs in a measles patient seems to be the right thing to do using the argument by analogy: measles is germ-caused. But, after no germs are found, to say it is in-principle invisible germs is to go a further step-- to move the goal posts-- to change the analogy (pg74-8).
White agrees that perhaps it is somehow "correct" to use analogy to argue for other minds, but there is something "misleading or tiresome" (pg75) about it. White tries to summarize the way the argument by analogy fails on pg 80-81, by claiming that using normal inductive reasoning to answer skeptical arguments either allows for unintelligible or false premises, or just builds into the grammar a "logical principle" that would not take the form of induction (pg81). Later in the chapter, White argues that Grey is close to simply re-stating the initial conditions that are taken to give evidence, in other words, collapsing the meaning of "will be colorblind" to "will fail the relevant tests" (pg83-5). Grey ends the chapter by trying to salvage the argument by analogy by saying the measles/invisible germs analogy wasn't apt.
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