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- Xref: sparky sci.philosophy.tech:3951 talk.philosophy.misc:2325 talk.religion.misc:20669
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- From: nyikos@math.scarolina.edu (Peter Nyikos)
- Subject: Re: QM and Free Will
- Message-ID: <nyikos.720916492@milo.math.scarolina.edu>
- Sender: usenet@usceast.cs.scarolina.edu (USENET News System)
- Organization: USC Department of Computer Science
- References: <1992Oct29.180335.3011@guinness.idbsu.edu> <1992Oct31.014721.1476@leland.Stanford.EDU> <1992Nov1.102609.13247@black.ox.ac.uk> <1992Nov2.020038.19948@guinness.idbsu.edu>
- Date: 4 Nov 92 22:34:52 GMT
- Lines: 70
-
- In <1992Nov2.020038.19948@guinness.idbsu.edu> holmes@garnet.idbsu.edu (Randall Holmes) writes:
-
- >In article <1992Nov1.102609.13247@black.ox.ac.uk> microsoc@black.ox.ac.uk (Microsoc) writes:
- >>On Free will vs determinism...
- >>
- >>What do you netters think about Lucas' argument (which has been pinched by
- >>Penrose now and will appear in his forthcoming book)? Put baldly it is:
- >>
- >>1. We can do higher mathematics, therefore
- >>2. We have free will.
- >>
- >>Penrose argues to (2. Artificial intelligence is impossible given current
- >>conceptions of "computability")
- >>
- >>The bare bones of the argument (I can't do it justice in the time I have
- >>acailable here <-- excuse typo, my editor is broken) are that we can apply
- >>a Go"del type arguemtn. It can be shown (fairly conclusively, at least
- >>prima facie) that IF we do math by means of an algorithm THEN that algorithm
- >>cannot be knowable,
-
- >to us, certainly.
-
- > otherwise we can construct a Stopping (sorry, Halting)
- >>paradox a` la Turing. The point is that in doing math we can disprove
- >>ceratin (whoops) putative theories (theorems, even - sheesh, my typing isbad
- >>today) WITHOUT recourse to a computable (decidable, causal)
- >algorithm.
-
- >There is no reason to believe we do not use an algorithm; we just
- >don't know what it is.
-
- >>
- >>Sorry this is so short - if there is sufficient demand I'll put the argument
- >>in a little more detail when my )(*!@#$%^*&( editor is working properly again.
- >>
- >>Marc Read
-
- >These arguments are unsound.
-
- In such short form, yes, but could it be that Penrose has a much more elaborate
- theory that might survive even your scrutiny? I have not read his
- arguments; have you?
-
- >P.S. I am a professional mathematical logician; I know exactly what
- >Godel's Theorem says, and it does not prove that we have free will or
- >can prove things non-algorithmically, nor does it disprove the
- >possibility of AI.
-
- I have some expertise in mathematical logic, being a set-theoretic
- topologist. We work all the time with axioms that are independent
- of the usual "self-evident" ones like the axiom of choice.
-
- [This is the axiom that for each collection of disjoint non-empty
- sets, there is a set which intersects each member of the collection
- in a single-element set.]
-
- But
- occasionally we come across axioms that seem *almost* self-evident,
- and we also have a strong intuition for the *consistency* of various
- axioms ["large cardinal axioms"].
-
- Now, where do these intuitions come from, if we are *only* the
- concatenation of atoms blindly following physical laws? I admit
- this is not exactly the same argument as the abbreviated Penrose
- argument you see above, but it comes from the same deep wellsprings,
- and fuels the speculation that there is more to our world than just
- the scientifically explainable phenomena.
-
- Peter Nyikos
-
-