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Posted by Michael Levine on July 21, 2003 14:09:34 UTC

Why does "entropy increase as time passes"?

I didn't understand your argument very well, but perhaps you might be interested in this:

Entropy has left the domain of physics and is better understood in terms of information theory. Essentially, entropy is a measure of the amount of information in a system: the more information, the more entropy. The reason entropy increases with time should be obvious: time just happens to be the phenomenon of creating information. So entropy increases with time almost by definition.

Almost. In particular circumstances, entropy can actually be reversed with time. That is possible because time is also responsible for loss of information (which we experience as 'forgetting'). The trick to reverse the entropy of a closed system is to figure out how to lose information without producing more than is lost. No one has found a way so far, except in theoretical scenarios such as Maxwell's demon.

Hope this helps.

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