On Sat, Nov 10, 2018 at 1:09 AM Bruno Marchal <[email protected]> wrote:
> Any Turing machine can emulate any Turing complete subset of physics. You've got it backwards, physics can simulate a Turing Machine but a Turing Machine can't simulate anything or do anything at all without the help of matter that obeys the laws of physics. > >>> *mathematical models and realities are quite different from the >>> language used to describe them.* >> >> > > >> That is equivalent to saying "The English word "cat" is quite >> different from the English word "cat" “. >> > > *> ?* > ! A mathematical model is a description of something written in the language of mathematics, like most descriptions it is not complete, some details have been left out and that's why a toy model of a battleship is simpler than a real physical battleship. A mathematical model of another mathematical model can be complete but not of something physical. John K Clark -- You received this message because you are subscribed to the Google Groups "Everything List" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/everything-list. For more options, visit https://groups.google.com/d/optout.
