Le 16-août-06, à 15:28, 1Z a écrit :
> > > Bruno Marchal wrote: > >> Note also I have not yet seen physical theory which does not assume >> numbers. > > Physical theories assume the validity of mathematical statements. > That doesn't mean the existence of numbers. Everyone agrees that > numbers can't be empirically detected, so if they don't exist that > changes > nothing about the theory. Of course I was again using "existence" in the mathematical sense. Here I was just saying that you cannot axiomatize any physical theory (rich enough to explain if only the appearance of observations) without accepting the independence of truth like "it exists a number such that ...". Recall once and for all that I don't believe at all (especially by comp) in any form of substantial numbers or think like that. When I say that numbers exist, I take it as a mathematical statement, not a metaphysical one. The metaphysics, or better the theology, relies in the fact that the comp hypothesis needs an act of faith. Note that taking a plane or just going out of my bed in the morning asks some faith too, once comp is assumed (btw). Bruno http://iridia.ulb.ac.be/~marchal/ --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Everything List" group. To post to this group, send email to everything-list@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/everything-list -~----------~----~----~----~------~----~------~--~---
