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A concept related to the asymmetry of time, usually related to the second law of thermodynamics, which says that entropy always either increases or stays the same.

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In a "universe" where time runs backwards, is cause/effect preserved?

Caveat: I'm a layman not a physicist, and this may be more semantics than physics. In a universe where time runs backwards (think of a movie run backwards, where a vase that is shattered on the floor …
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