Showing posts with label descartes. Show all posts
Showing posts with label descartes. Show all posts

Saturday, February 13, 2010

Disembodied Existence

I have not done much research, but it appears that lot of philosophers deny that disembodied existence is logically or conceptually possible. I don't mean those who hold that given a certain ontology of mind (e.g. materialism) a person cannot exist without her body. I rather have in mind those who think that the very notion of a person existing without his body is incoherent.



As I say, I have not done the research, but it looks like the main reason people hold that disembodied existence is impossible is that when you think through the idea you realize that you cannot make sense out of it. There is some deep contradiction or absurdity in the very idea of me existing without my body.



The best way to respond to this sort of argument is to show that one can easily understand what it means to be disembodied. Consider the following argument:



(1) The senses are fallible

(2) If the senses are fallible, then it is possible that all my current beliefs about my body that are derived from senses are in error

(3) The belief that I am embodied now is derived from my senses



Therefore, (4) It is possible that all my current beliefs about my body, including that I have one, are in error.



I don't see how anyone can deny (1). Maybe (2) is false. It could be that while the senses are fallible, there is something special about sensed body. I guess one could hold that kineasthetic sensations are epistemically privledged, or something like that. But then what would one do with phantom limbs?



Note that (2) does not say that it is possible that *all* the beliefs that I derive from sense percepti in error. It only says my current beliefs are such. A lot of arguments against skepticism purport to show that while the senses may be mistaken here and there, there is something deeply incoherent about supposing that all my sense derived beliefs are false. I am not overly impressed by these arguments, but even if they are sound, they do not call into question the truth of (2)

Thus even if skeptical arguments fail to show that life could be a big dream, they still serve a very important metaphysical function in helping us to understand what is really involved in the concept of the self.


Can anyone think of a reason to deny (3)



So in order to conceive of yourself as dismbodied, you don't need to go through some elaborate thought experiment or have an out of body experience.. You just need to realize that the senses are fallible. You there, reading this, can easily conceive of yourself disembodied right now.

Yes I know I am just chanelling Descartes here. But what is wrong with the reasoning?

Of course it will still seem to you that you are embodied. Nothing has changed with respect to your experience. That is why its so easy!!


I have intentionally made the argument very weak. It only shows that it is possible for a person to exist without a body. It does not show that each of us can exist without a body all the time, or that we never really have bodies (understood as objective metaphysical realities)

Friday, October 31, 2008

Kant on the Ontological Argument

Kant claims the ontological argument is unsound because existence is not a predicate. Since existene is not "something' that can be part of our concept of a thing, it can not be part of our concept of God. Basically Kant thinks existence consists in the application of a concept to reality. He foreshadows the Russellian view of existence as a second order property.

My concern with Kant's critique lies in the relationship between two claims:

(1) Existence is not a real predicate

and


(2) Existence is not a first order property


I don't think (1) entails (2)

To be a "real predicate" is to be part of the concept of a thing. To be a property is to be part of a thing (or instantiated by the thing--the point is properties deal with reality, predicates with concepts)

Suppose there was a feature of reality that could not be part of the concept of a thing. Surely we cannot rule out a priori the possibility of such a property.

But how could such a property be known? if it is not part of the concept, how do we even thing about it?

My answer is to suggest that thinking by means of concepts is only one way to understand something. I can think of pain by means of a concept (i had a bad headache yesterday) OR I can think of pain by directly experiencing the pain. Only the former requires a concept.

I think that the cogito provides us with an example of a property being present phenomenologically, but which may, as Kant says, never be a part of our concept of something. When I know I exist, I know something about me intuitively, not by means of concepts. So I have reason to think that existence is a property even if Kant is right that existence is not a real predicate.

Another way of making the same point is to consider whether it is proper to think of consciousness as an object at all. Perhaps our concepts are limited to cognition of objects, but that which is aware of objects is of a radically different ontological kind.( compare Berkeley on notions and ideas.)

Wednesday, October 29, 2008

an ontological argument for immortality

Recall Descartes' famous dictum that "I exist" can be known with certainty prior to any other knowledge. Now if my existence is really what is first known, it cannot be an inference. If Descartes reasoned "Everything that thinks, exists"/"I think" "THerefore, I exist, my existence would not be the first thing known. it would depend on some general and controversial premises. For these reasons I think the cogito has to be understood as an immediate intuition--an insight into the necessary connection between "me" and "existence"

But the "I" or "me" may be too metaphysically robust. We may argue, contra Descartes, that what is known to exist is not the metaphysical subject, but consciousness--particular moments of awareness.

If that is so, then we should more conservatively claim: There is a necessary connection between consciousness and existence.

why a necessary connection? Well, if it was merely contingent, if there could be a consciousness that did not exist, then even this truncated cogito fails. But this more limited cogito is probably the least controversial of all philosophical theses.

Nor can one say that the intuition involved in the cogito only applies to consciousess--that the existence part is really superfluous. This is because it is not obvious that "everything" exists. Hallucinations and dreams seem to provide prima facie examples in which we are aware of nonexistent things. Of course, those of a Russellian bent will be inclined to explain away these appearances. But the theory of descriptions is hardly a premise we can use to buttress the soundness of the cogito. Again, the cogito stands on its own--its soundness relies on an immediate insight, not an argument that involves other premises.

But if existence is necesarily connected to consciousness, have we not then shown that consciousness necessarily exists? is not this parallel to the conclusion of the ontological argument with respect to God?