On 10 Jan 2014, at 23:26, Stephen Paul King wrote:
Dear Brent!
Indeed! A theory that explains "everything" must be more than a list
of tautologies!
Good. And that's the case with comp. We get 8 logics and mathematics.
Bruno
On Fri, Jan 10, 2014 at 5:25 PM, meekerdb <[email protected]>
wrote:
On 1/10/2014 10:27 AM, Bruno Marchal wrote:
But what about Glak, a being in an alternative physics?
If Glak mind obeys to the laws of Boole, and if Glak as a finite
body, and if he is self-referentially correct, then we share with
Glak the same sigma_1 true sentences, and he figures it out (by Bp
& Dt) in the same way, so we have the same physics. If Glak shows
us an electron heaver than ours, we can conclude that the mass of
an electron is not a necessity, but a contingency, a geographical
fact, and there might be a law given the mass electron relatively
to that type of accessible physics (given that we succeed in
talking with Glak).
But there's the rub. Could Glak's universe not have electrons?
Could it not have electrical charge? A theory that cannot tell us
what is contingent and only that arithmetical (or logical truths)
are necessary doesn't really tell us anything. It just says
"Tautologies are true."
Brent
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