The Misunderstood Nature of Entropy

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Entropy and the second law of thermodynamics has been credited with defining the arrow of time.

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Entropy is surely one of the most intriguing and misunderstood concepts in all of physics. The entropy of the universe must always increase – so says the second law of thermodynamics. It’s a law that seems emergent from deeper laws – it’s statistical in nature – and yet may ultimately be more fundamental and unavoidable than any other law of physics.

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