Showing posts with label dualism. Show all posts
Showing posts with label dualism. Show all posts

Monday, January 21, 2008

Indexicals and Phenomenal Concepts

In this post, I want to connect up the contents of my previous two posts (found here and here). Indexicals connect up to non-indexical representations by showing up in non-indexical places in thought (for instance, 'now' shows up where the temporal parameter should be, 'I' where the personal parameter should be, etc.). Since it takes such a place in thought, it is thus is subject to a minimal amount of conceptualization and is conceptually connected to non-indexical concepts concerning the appropriate parameter it falls under. For instance, 'now' is conceptually connected to temporal concepts since it takes over the role of the temporal parameter at the level of explicit representation. Hence, we are aware of or at least attuned to the general function of 'now' as a representation with a certain kind of usage. And this is at least part of why indexical information "disappears" from the objective, third-person perspective - precisely because such information takes on an explicit role of a certain kind without explicitly assigning any particular value to the parameter it stands in for, and all of this is something of which we can be consciously aware of in the first person. This is why the 1- and 2-intensions of indexicals end up differing and why many of us are not tempted to think that there is any here or I or now in any kind of context-free sense.

With phenomenal concepts, however, we don't have all of this - hence, there is no "dissolution" of phenomenal information from the objective point of view. So even if phenomenal concepts end up being indexical-like in some important way (or recognitional or whatever), this important difference - that it doesn't take the place of a non-indexical parameter - helps make the difference between them and indexical concepts or other perspectival concepts. They simply do not have the conceptual role that normal indexical concepts do, even if their semantics may in some ways be similar.

Linguistic indexicals, for instance, "disappear" since we need to know third person truth conditions to interpret others' usage - and sometimes even our own. And this may sometimes be necessary even in our own thoughts - to know the links between our indexical concepts and the concepts relating to whatever these indexicals are standing in for. But with pure phenomenal concepts, things are a bit different - there is no need for a separate parameter cashed out using non-phenomenal concepts for which phenomenal concepts fill in. And hence there isn't such need to reinterpret what others say in phenomenal terms into non-phenomenal terms. If phenomenal concepts refer to features which can be reduced to the non-phenomenal, since these features would be so complex and outside the ability of most of the human race to get an accurate, specific and non-deferential cognitive fix on in non-phenomenal terms we would ordinarily have no need to have separate explicitly non-phenomenal parameters which phenomenal concepts fill in for - and, indeed, if phenomenal features are anything like brain states of a certain sort then not only would we ordinarily have no need but none of us at the present day (as far as I know) are in a position to even have such parameters. So we do not have such parameters and hence, even if the phenomenal is subsumed under the physical, there will not be much of anything in the way of conceptual connections between phenomenal and physical or functional concepts - even if phenomenal concepts are in some ways like indexicals.

Friday, January 11, 2008

A Quick Note on Chalmers on the Phenomenal Concept Strategy

Chalmers (in numerous places) objects to the phenomenal concept strategy as a response to his explanatory gap argument against mainstream forms of physicalism. On most versions, he says, they make phenomenal concepts out to be indexicals or demonstratives. Yet indexicals and demonstratives have different 1- and 2-intensions whereas phenomenal concepts do not (hence why, from a third person point of view - according to Chalmers - when considering the truth conditions of someone else's indexical or demonstrative thoughts or other representations, the indexicality disappears, whereas this is not the case for pure phenomenal representations).

However, I think Chalmers is way too quick. If phenomenal concepts or representations are at least partially self-reflexive or represent phenomenal properties with those very same properties then we will have phenomenal concepts which do not have differing 1- and 2-intensions after all. And the phenomenal concept strategy will still work fine for physicalists of most stripes. It is simply a mistake for Chalmers to think that any sort of reflexivity or being recognitional makes a concept somehow automatically indexical or demonstrative. If it is essential to the concept that it has the content it does and hence does not have differing intensions then it will not be an indexical or demonstrative concept, contra Chalmers. So more work would need to be done to defend Chalmers' arguments agains this popular strategy.

Saturday, October 27, 2007

Recent Discussions Outside This Blog

Here are a few of the discussions I've recently been in that have (a) occurred outside this blog, and (b) taken up the blogging time I would normally use on this blog:

In comments on this post at Alanyzer, I offer some worries and objections relating to an argument by Alan Rhoda against mind-body physicalism. While not convinced by physicalism myself, I thought there were some serious worries about the argument as well as some probable mistakes. Alan was gracious enough to respond to one or two of the worries but left the majority of the criticisms untouched.

For some older stuff from that same blog, see this post where I get into a discussion about the nature of philosophical reduction. See also this post where I critique the arguments in that post that are supposed to be in favor of a tensed theory of time.

Most recently, I've been having a discussion about this post at metaphysical values over whether a certain kind of distributional property could serve as a good presentist truthmaker for past-tensed claims.

Tuesday, May 1, 2007

Random Thoughts on Ethics, Society, Welfare, and Human Functioning

So in lecture today the vast majority of students thought doctors should perform amputations for the wannabes mentioned in my previous post, presumably in large part because they thought that having such amputations is morally permissible. Well in line with narrowly Utilitarian or Consequentialist thinking, they seemed to channel the oft-repeated mantras of our culture: "You can do whatever you want with your own body", "It's okay since it makes them happy", "It doesn't hurt anyone", etc. In discussion section tonight, however, I really pressed them and got to think of lots and lots of reasons against such amputations - reasons to think that they are in fact not morally permissible. At the end, the students were no longer so sure that such amputations were really as morally okay as they had initially thought. It's amazing what happens when you stop simply repeating the tired old lines of the overly-simplistic, feel-good pop morality that passes as public ethics these days and actually think about moral issues and moral reasons.

Some good reasons against that people came up with or that I came up with (some are just reiterations or slightly more nuanced versions of others):

It's being ungrateful for the body and abilities you have.
It's a very radical rejection of God's design of you in favor of your own.
It's a denial of the goodness of the whole of the healthy human body.
The benefits are outweighed by the risks.
It is harmful to the patient and reduces functionality.
It's medically unnecessary and doesn't help anyone else.
The desire for this sort of thing is just crazy or irrational.
It implants, encourages, and inflames other people's desires for similar things.
It leads to more of a burden on society's resources.
And so on.

Some of these are also good reasons against purely cosmetic surgery as well, which I'm okay with. I've always been bothered by cosmetic surgery and have long had a feeling that something just isn't right about it. It's not at all as bad (maybe) as voluntary amputation, but still has the feel of the frivolous, the ungrateful, the pseudo-gnostic denial of the goodness of the human body in its wholeness. It seems like a lot of the intuitions in favor of these sorts of things seems to involve the deep cultural influence of a kind of gnostic or extreme dualism. Gnosticism was an ancient heresy that taught that matter was evil and that spirit was good and thought of these are two completely separate, opposed realms. Unfortunately, the influence of this sort of view has survived to the present day.

Substance dualism is the view that there are two irreducibly distinct kinds of entities - material ones and immaterial ones - and the body is of the former kind whereas the mind or soul is of the latter. An extreme form takes it that I am simply my mind, a purely immaterial, nonphysical, spiritual object, and my body is just an instrument or tool that I happen to make use of for the time being. Both these views - gnosticism and extreme substance dualism - denigrate the body and make it somehow other than me and a mere possession to be used or disposed of as I see fit. Our society, I take it, has been profoundly influenced by such views, despite (or indeed sometimes precisely during) many people's protestations to the contrary.

One sees the influence of these sorts of views in many places. It's almost an orthodoxy, for instance, among many philosophers that human welfare is a purely mental affair - pleasure, desire satisfaction, or some other form of mental happy-crap. The body just doesn't matter - or at least it only does so insofar as it affects the mental stuff (which is the stuff, of course, which really matters). This sort of thing is simply a denial of our nature as physical beings - our design by God as living, material organisms. Plants and animals have welfare too, but it is implausible to say of them that their welfare is a purely psychological affair for them. This should be most obvious with plants since they really have no psychology in the first place. With them, our criteria revolve around the sorts of things they are and their abilities to function as designed - it revolves around a kind of health. I think we ought to say the same thing about human wellfare - my being well-off is a matter of my health, both physical and mental, and has to do with the sort of thing I am (a psychological subject yes, but also a living organism).

And of course relativism, overly cautious PC-tolerance of everybody and everything, the breakdown in moral education, and so on haven't helped matters as far as public ethical thought is concerned either. In the past disabled people were stigmatized, pitied, seen as less than human, etc. People thought their lives had to be less rich or full than "normal" people's and indeed less valuable. Most people probably still think that - consider Million Dollar Baby for instance. It could be the poster child for anti-disabled bias - the main character is an up and coming boxer and then becomes a parapalegic who ends her life with the help of her coach. Her life is portrayed as if it just wasn't worthwhile anymore and not valuable or worth keeping.

In response to this, people have, however, swung completely too far in the opposite direction. Disabled activists often won't even admit that the people they represent are disabled in the first place, that they have a hard time with anything, that there is anything whatsoever of disvalue about their condition, or that their functionality is impaired in any sense whatsoever (some among the deaf community are particularly guilty of this). It seems that we shouldn't go to either of these extremes - neither bigotry on the one hand nor blinded PC-fueled dogmatism on the other. Both of these, again, involve a denial in some way of our nature as living organisms. The bigoted side involves a denial that we can lead meaningful, valuable lives even when we are broken - even a broken body is a body designed by God and can be used for his glory. The PC side, on the other hand, involves a denial that we as humans have particular biological capabilities that are designed for us and which it is better for us to have than not. Both sides should be denied and we should break out of the assumption that both have nurtured that they are the only two options.

All of this is why I think it was wrong in the famous case for the two congenitally deaf lesbians to seek to have a congenitally deaf baby together (among other reasons) via genetic selection processes or genetic engineering - it involves a kind of intentional harm to the person so produced (though arguing that you can harm someone by creating them with deficits is a discussion for another day).

So anyways, that was a screenful. I'll stop now. I promise. Really.

Monday, April 9, 2007

Report on the APA

Sorry about the lack of blogging lately - I've been in the Bay Area at the annual Pacific Division meeting of the American Philosophical Association. It was kinda cool seeing all these famous people and not knowing they were famous people until someone called them by name. Anyway, I caught the first two sessions of the second and last day of the Mini-Conference on Models of God and it was semi-interesting. I sat in for the first session on open theism, which was interesting. Alan Rhoda made the good point, which I had not considered before, that an open theist might take the point of view that the future is settled in the sense that every meaningful statement about the future is either determinately true or determinately false. This sort of open theist, by stating that God does not know all future contingents, denies that God knows everything - there are truths about the future that God just doesn't know. I think that's not a very plausible position to take, if not incoherent, but it's a point well-taken that this sort of position would also count as an open theist position.

Another panelist made the claim that a lot of the debaters in the controversy over open theism are simply evaluating things based on differing values or ordering of values. For instance, non-open theists think that a God who takes risks is somehow less than God - it is not befitting of God or his greatness. Open theists respond that, on the contrary, a God who doesn't is somehow less than God - it is not befitting of God or his greatness to constrain people. This clearly seems to be a disagreement about values at the fundamental level - if you start with grandeur then you're not likely to be an open theist whereas if you start with love and self-sacrifice you are more likely to be one. While much of this debate may be like this, however, I think a lot of it is not. Whether open theism can do justice to biblical prophecy, biblical teaching on God's knowledge and control, whether it can provide a coherent or plausible view of time and God, and so on are not subjects in which values mainly come to the fore - these are primarily exegetical and metaphysical issues.

Another one of the panelists reported and agreed with the writings of some open theist scholar to the effect that the development of the doctrine of the Trinity, far from being influenced by or a product of Greek philosophical thought as is sometimes claimed, was actually a reaction to such influence. According to this viewpoint, Arius and other heterodox thinkers, influenced by Greek ideas of the kinds of gulfs between human and divine and oneness and simplicity, etc., objected to the deity of Christ and the doctrine of the Trinity was an attempt to resist what was thought to be an effort to squeeze the Divine Persons into the procrustean bed built for it by Greek thought and sensibilities. He also claimed, however, that Trinitarianism was the answer to the anti-open theism of the day and that reflection on the Trinity demands open theism. This move, however, was vastly unclear and I really have no idea how one is supposed to get from Trinity to God not knowing future contingents - this was quite a leap.

I also saw the panel on panentheism but this was pretty unclear and boring (at least to me). The first speaker was not a native speaker and unfortunately I wasn't able to clearly make out a lot of what he said because the accent was so thick. So I wasn't quite sure what his paper was about and he wasn't quite sure what was going on when audience members asked questions, which was too bad. Panentheism (for those who don't know) is, by the way, the view that God includes the world in himself. God is more than the world, but the world is not a separate being from God even though God and the world are different entities. The basic metaphor of many panentheists is that the world is "God's body" in some weird sense. I'm not sure about the whole "God's body" thing - which is pretty weird - but something like panentheism used to be highly attractive to me. I think an adequate theory of God ought to take on the kernel of truth in panentheism but jettison the whole "God's body" business and treating the physical world as if it was a literal proper part of God.

In the remainder of the conference, I went to a lot of talks. A lot were hard for me to follow and I didn't get much out of them - this was most of the time due to lack of sleep, my generally poor attention span even under normal conditions, being too far in the back or unable to see the speaker well, etc. A few of the ones of note from Thursday and Friday: David Papineau argued that identity theorists must not really fully believe mind-brain identity since even to them the association seems contingent. If they really fully believed it, this wouldn't even appear contingent to them. David Chalmers noted that in a substantive dispute, the terminological dispute associated with the dispute is due to the dispute itself whereas in a merely terminological dispute the order of dependency is reversed. Chalmers gave a heuristic for uncovering merely terminological disputes: disallow the offending the word and make each party rephrase their position without it. If the respective rephrasings do not conflict, this is a merely terminological dispute. If they do, then it isn't. Some words, however, cannot be so eliminated. Chalmers dubs these "bedrock" and debates involving these words are probably going to be substantive rather than merely terminological since there are no more basic words in which to frame the disagreement and display the lack of substantive disagreement.

On Saturday morning, I commented on Stephan Torre's paper "In Defense of a Formulation of the Date Theory" (I think I got that title about right). It went pretty well. I'll have to keep in touch with Stephan since we have some similar projects in trying to defend a tenseless view of time. The last time session of Saturday was on a paper attempting to show that our temporal biases in our concern for others is conflicted and irrational. Our very own Cody Gilmore commented on the paper and argued against the thesis. During the discussion period, I offered some objections of my own. At a session on perception later that day, all I remember is that the idea of a Spinozistic system was introduced. In a Spinozistic system (perhaps perception is one of these as is testimony), this system directly gives us a belief which we only afterwards evaluate and decide whether to reject it or keep it. This nicely explains how brainwashing and cult indoctrination works - keep telling people stuff often enough and don't give them the opportunity or ability to evaluate or decide for themselves whether to keep such beliefs and they will keep them by default.

At the Society for the Philosophy of Time group meeting Saturday night, Cody presented the idea of a new theory of persistence - distension theory. According to this theory, objects wholly occupy temporally thick regions of spacetime where the thickness is determined by size, complexity, and kind. This is a pretty interesting view, and congenial to me in various ways. It's definitely better than endurantism, I think, but I'll have to think more about how it compares with perdurantism.

This coming Saturday - another conference in the Bay Area...

Monday, March 19, 2007

Notes on Ludlow: Chs. 5-6

**WARNING: Technical Post**

In the beginning of Chapter 5 Ludlow says,

A first attempt at a semantical theory consistent with this [the tenseless] picture would be to give "tenseless truth conditions" for tensed sentences. That is, we want the right-hand sides to be free of A-series predicates (including 'past' and 'future' as well as temporal indexicals. (p.77)

Such a theory, as Ludlow sketches in the remainder of the chapter, would involve use of temporal language committing us to the existence of other times standing in various temporal relations (or, if we wanted to adopt more of a reductionist or relationalist picture, the existence of events standing in various temporal relations).

In the next chapter, Chapter 6, Ludlow details what he takes to be problems for the tenseless theory. The main problem is something I already addressed in my post on Chapter 3 - Ludlow thinks that the tenseless theory cannot deal with 'the indexical nature of temporal discourse'. This is just the problem with the man in the house of mirrors again. To give just one example, Ludlow claims that the following two sentences as said on March 12 express different semantical knowledge and that the tenseless theory cannot deal with this because it will have to give them the same truth conditions (in the rest of the chapter, Ludlow also, despite earlier toying with the theory, rejects token-reflexive theories for temporal language (rightly, I believe)):
(1) My fifth anniversary is (this) March 12.
(2) My fifth anniversary is today.
He also notes, with Prior, that it seems that one is not thanking goodness for any tenseless fact when one is thankful that a painful dentist visit is over with but the tenseless theory seems to require that this is what one is thankful for.

The answer here is a fairly easy one - distinguish between, on the one hand, Ludlow's "semantical" truth-conditions which are intended to mirror the speaker's perspective and way of representing things (we can call these r-mirroring truth conditions, since they are supposed to mirror our way of representing the world), and, on the other, "metaphysical" truth-conditions which are supposed to capture the metaphysical structure of the world as it matches up (or fails to do so) to our representations (we can call these m-mirroring truth conditions, since they are supposed to mirror the metaphysical structure or "joints" of reality). "'e is now' is true iff e is now" can be a correct account of the truth conditions as represented by the knower (that is, the r-mirroring truth conditions) but it can still be true that what makes 'e is now' true is the tenseless fact that e is at t (these are its m-mirroring truth-conditions). That is, it can still be true that a mental or public tokening of 'e is now' at t is true iff e is at t since at t 'e is now' and 'e is at t' express the exact same fact, just with a different representational form - the former is needed for action whereas the latter is not sufficient so that when one represents the truth conditions one needs, for action, to represent them in the latter way - in an r-mirroring rather than m-mirroring way. If they are represented as ' 'e is now' is true iff e is the time of this utterance', for instance, that will not be sufficient for action or sufficient to know that e is now since i don't know this utterance is now.

So ultimately I don't think the failure Ludlow notices in providing tenseless r-mirroring truth conditions is really relevant to whether or not we should be tenseless theorists. A tenseless theorist just isn't committed to giving r-mirroring truth conditions. Indeed, this can be seen as the characteristic difference between the Old Tenseless Theory of Russell and company and the New Tenseless Theory of Mellor and others - the Old theorists were trying to give r-mirroring truth conditions and that was shown, as Ludlow has shown once again, to be a failure. The New theorists, on the other hand, have abandoned that project as hopeless and wish instead to give us tenseless m-mirroring truth conditions while allowing that we cannot give tenseless r-mirroring truth conditions for all tensed language. I think this is where Ludlow fundamentally misunderstands what Mellor is trying to do.

This is similar to what's going on in phil mind over property dualism (the view that there are irreducibly mental properties). The phenomenal concept strategy tries to show that physical descriptions do not miss anything in the world that can be captured by phenomenal descriptions but that this is compatible with the conceptual irreducibility of the phenomenal to the physical - that is, phenomenal descriptions must be given phenomenal r-mirroring truth conditions but that's compatible with giving them physical m-mirroring truth conditions.

On the last page of the chapter, Ludlow is somewhat cryptic about why tensed truth conditions or tensed beliefs require a tensed reality:
If the world contains only B-theory resources, then precisely how do we avoid having a B-theory psychology?
The illusion of a possible way out here is fostered by thinking that there could be psychological concepts that are, as it were, disembodied - cut off from the actual world in important ways. How can a psychological property (call it foo) that bears no relation to tense in the actual world have anything to do with tense?
It is no good to say that our abstract property foo is tensed because it is grounded in our time consciousness or temporal perception. That merely keeps the question one step removed. Then we must ask what it is about time consciousness or perception that makes them tensed. Why do we call consciousness or perception tensed if it does not correspond to something tensed in the actual world?
[...]psychological states (particularly perceptual states) are individuated in part by relations to the external world. In this case, that means that if the world is not tensed then it is difficult to see how our perception of the world could be tensed. (p.96)
I'm not quite sure what the problem is here - the tenseless theorist has perfectly reasonable accounts of how our tensed psychological states hook up to the tenseless world. It is necessary for our representations in general to fed into our cognitive systems in certain forms for them to be useful to us - in order for the ordinary descriptive facts of the world to be useful for action they need to represented by us in certain special ways. Facts about time are like this too and we call our special-functioning representations tensed when they have this function with relation to time. Tense has to do with the structure of our representations, not the facts they are about. Just because our representations have particular features doesn't mean the facts they represent have to have those features. So much should be pretty darn obvious. So this plea at the end of the chapter just seems to me to be pretty lame.


Four chapter to go...