September 1, 2012

Physicists Relieved: Arrow of Time Really Does Exist

The Economist, The Economist


AP Photo

TIME seems to flow inexorably in one direction. Superficially, that is because things deteriorate with age—and this, in turn, is because there are innumerably fewer ways to arrange particles in an orderly fashion than in a jumbled mess. Any change in an existing arrangement is therefore likely to increase its disorder.

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