At 05:16 PM 11/9/00 -0600, Jim Choate wrote: >On Thu, 9 Nov 2000, Jim Choate wrote: >> On Wed, 8 Nov 2000, Sampo A Syreeni wrote: >> >> > You are talking about two very different problems, here. Gödel/Turing sorta >> > things are about problems where quantifiers over an infinite set are >> > permitted. >> In the particular case we are speaking of we are talking about the >> situation where the language consists of "all >> consistent/valid/evaluatable/assignable boolean sentences". >> >> Hence, somebody did a naughty... > >If you have a 'language' that is provably consistent then you know that >that language is not complete or 'universal'. There MUST!!! be sentences >which are not included in the listing. That's fine. The Satisfiability problem, and in particular 3-SAT, doesn't claim to be complete or universal. It's just a very large and versatile class of Booleans, but it doesn't pretend to contain Booleans that describe encodings of their own truth values (unlike this discussion :-) Just things of the form (A1 or A2 or A3...) AND (B1 or B2 or B3...) AND .... Thanks! Bill Bill Stewart, [EMAIL PROTECTED] PGP Fingerprint D454 E202 CBC8 40BF 3C85 B884 0ABE 4639