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- From: chalmers@bronze.ucs.indiana.edu (David Chalmers)
- Subject: Re: Proof of God's Existence
- Message-ID: <Btx5E0.2Kw@usenet.ucs.indiana.edu>
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- Organization: Indiana University
- References: <17ui6kINNsft@matt.ksu.ksu.edu> <1992Sep1.135132.5195@dcs.glasgow.ac.uk>
- Date: Tue, 1 Sep 1992 21:37:11 GMT
- Lines: 48
-
- In article <1992Sep1.135132.5195@dcs.glasgow.ac.uk> jack@dcs.glasgow.ac.uk (Jack Campin) writes:
-
- >What you might have in mind is Robert K. Meyer's "God Exists!", published
- >in the American philosophical journal "Nous" around 1980. It uses Zorn's
- >lemma in a version of Aquinas's "first cause" argument. Meyer is a serious
- >and reputable (if idiosyncratic) logician, and a Christian; the paper isn't
- >a leg-pull like the Ian Stewart item mentioned here before.
-
- Well, it seems to me that the paper is not entirely serious. The abstract
- certainly seems to have tongue firmly ensconced in cheek:
-
- Meyer, Robert K. God exists. Nous 21, 345-361 S 87.
-
- Building on a suggestion communicated in conversation by Hilary Putnam, this
- article provides a definite answer to a previously disputed question of
- philosophy by establishing the existence of God. In outline the argument
- (which the reader may find somewhat familiar) goes as follows: Everything has
- a cause; therefore there is a First Cause, namely God. Objections to the
- effect that the argument is refuted because causal sequences can descend
- forever are themselves refuted by a timely appeal to Zorn's Lemma.
-
- Particularly nice touches in this send-up of philosophical pretensions
- include the "definite answer to a previously disputed question", along
- with the "somewhat familiar" and the name-dropping. (Thanks to Calvin
- Ostrum for pointing out this abstract to me.)
-
- The paper itself is quite fun, although it does rest on some dubious
- assumptions, viz: (1) to get the upper bounds required for the
- application of Zorn's Lemma, one must postulate that there is something
- causally anterior to every item in a given causal sequence; (2) to
- establish the uniqueness of God (who is, of course, a First Cause), one
- must assume that for any two events, there is some item that is
- causally anterior to both.
-
- It follows as a simple corollary that the existence of God is equivalent
- to the axiom of choice (to get the converse implication, just let
- God do the choosing). Meyer notes that this immediately rules out
- the possibility of a constructive proof of God's existence (i.e. one
- that doesn't appeal to Choice), as such a proof would imply that
- the axiom of choice was not independent of the other axioms, contra
- Cohen. He also suggests that given the equivalence of the axiom of
- choice and the existence of God, AC should hereafter be ascribed to
- Aquinas rather than Zermelo.
-
- --
- Dave Chalmers (dave@cogsci.indiana.edu)
- Center for Research on Concepts and Cognition, Indiana University.
- "It is not the least charm of a theory that it is refutable."
-