Stathis Papaioannou wrote:
> 2009/1/24 Alberto G.Corona <agocor...@gmail.com>:
>> But the fact is that in our univese, glasses do recompose themselves,
>> the flame of the candles do recombines liberating oxygen and make grow
>> the candle, objects lighter than water sink. Why? because these events
>> exist in our space time; Just go in the reverse time dimension in our
>> space-time manifold to see them. The laws of physics permits them.
>> They are just reversible chemical reactions, reversible object
>> collisions at the particle or macroscopic level.
>> In terms of our perception of time, the outcomes we see happens just
>> because they are cuasi-infinitely probable and the reverse
>> counterparts, cuasi infinitely improbalbe. But, that is also an
>> illlusion of the arrow of time, because , In terms of time-agnostic
>> spacetime manifold reasoning, our life vector in space-time go along
>> the increase of entrophy, not the other way around. That is: the
>> outcomes of probability laws are a consequience of our trajectory in
>> space time. Why our life follow this direction?. The reason is
>> computational, as I said before.
> The question is often asked, why does time seem to progress in the
> increasing entropy direction? But if time were in fact progressing in
> the decreasing entropy direction, we would know no different. For
> example, if we were living in a simulation where 2009 is run first and
> 2008 is run second according to an external clock, we would not be
> able to tell from within the simulation. The real arrow of time
> question should be: why does entropy increase in the same direction in
> every observed part of the universe?
Right. It's generally thought that the direction of increasing entropy is
defined by the expansion of the universe since the expansion increases the
available states for matter. But it's hard to show that this must also
determine the radiation arrow of time.
But at the micro-level of QM there is presumably no change in entropy, the
evolution is unitary. So then the question becomes: Why the approximately
classical world, in which the coarse-gained entropy does increase?
>For only if the glass shattering
> occurred in a direction different to that of the mind of the observer
> would something unusual be noticed.
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