On Wed, Dec 19, 2018 at 11:27 AM Jason Resch <[email protected]> wrote:
> On Tue, Dec 18, 2018 at 6:05 PM Bruce Kellett <[email protected]> > wrote: > >> On Wed, Dec 19, 2018 at 11:02 AM Jason Resch <[email protected]> >> wrote: >> >>> On Tue, Dec 18, 2018 at 3:23 PM John Clark <[email protected]> wrote: >>> >>>> >>>> Arithmetical computations don't change so there can't be a >>>> correspondence between them and the evolution of spacetime or with >>>> anything else that can change. >>>> >>> >>> "y = 2x+1" defines the arithmetical relation of "oddness". >>> >>> Solutions to this equation yield (compute) for *y* all possible odd >>> numbers. *y* changes with respect to increasing values of *x*, just as >>> John Clark's brain changes with respect to increasing values of *t*. >>> >> >> How does 'x' change? >> > > With respect to y, and vice versa (like your brain state and your location > in spacetime). > Poor analogy. Change in the physical world is governed by dynamics, described by equations with a veritable 't', called time. Time is probably only a local phenomenon, but I do not see any 'time' variable in arithmetic. The analogy with the block universe idea is useless, because the block universe idea is only a picture, not a reality. Special relativity merely abolishes any notion of Newtonian absolute time, it does not prove that all instants of time are equally and simultaneously existent. The whole notion of simultaneity is abolished in relativity. Minkowski's block universe was a response to this, but not a very good picture in the final analysis, because it completely fails to capture the local dynamical aspect of the time variable. Bruce -- 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.
