ruveyn wrote:
It doesn't contract. At the state of total disorder it stays there in the statistical sense. There is no more high grade (Gibbs free energy) energy left to contract anything. Where does a smoke right go when it dissipates?
ruveyn
That is the case only if the expansion has sufficient energy to overcome gravitation--a circumstance not yet demonstrated.
But if gravitation overcomes exapansion, then the question will arise as to whether matter is coalescing into a more ordered state as it does so, and whether this will lead to an inversion of the second law of thermodynamics. Not the intuitive likelihood, but a fun one to contemplate.
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--James