On 11 April 2015 at 21:09, Telmo Menezes <te...@telmomenezes.com> wrote:
> Ok. I have an idea about that, it is probably not original. Tell me what > you think: > The universe was not created. All possible states just exist. The moment > of the big bang is one of the many possible states. What we call the past > is a sequence of steps in the state graph that are coherent predecessor of > each other, in the sense that they contain less and less information. Given > that the moment of the big bang is the lowest entropy state conceivable, > all history lines will originate there. > > My problem with any view based on entropy is that entropy doesn't appear to be fundamental to physics; it is the statistically likely result when objects are put in a certain configuration and allowed to evolve randomly. However the laws of physics are (mainly) time-symmetric, with the definite exception of neutral kaon decay and the possible exception of wave-function collapse, and an ordered state could evolve to become more disordered towards the past (although that would make the past appear the future for any beings created within that ordered state). Yet we never see that happening, and there is an elephant in the cosmic room, namely the expansion of the universe, which (istm) must always proceed in the direction of the AOT. Hence the appeal to boundary conditions. If something forces the universe to have zero (or very low) radius at one time extremity but not at the other, this asymmetry could be sufficient to drive the arrow of time in a particular direction. I've (as it were) expanded on this idea before, however, so I won't go on at length about it again. -- 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 everything-list+unsubscr...@googlegroups.com. To post to this group, send email to everything-list@googlegroups.com. Visit this group at http://groups.google.com/group/everything-list. For more options, visit https://groups.google.com/d/optout.
