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It is shown that if physical space time were truly compact there would onlybe of the order of one solutions to the classical field equations with aweighting to be explained. But that would not allow any peculiar choice ofinitial conditions that could support a non-trivial second law ofthermodynamics. We present a no-go theorem: Irreversible processes would beextremely unlikely to occur, for the almost unique solution for theintrinsically compact space time world, although irreversible processes arewell known to occur in general.What we here assume -- compact space time --excludes that universe could exist eternally.Comment: 11 pages,4 figure

NONEXISTENCE OF IRREVERSIBLE PROCESSES IN COMPACT SPACE–TIME