Back in August I asked a question on this forum about Zurek's paper "Decoherence and the Transition from Quantum to Classical—Revisited" and got no response. I am sure many of the folks on this list have read this paper in which Zurek states that entropy increases upon decoherence (that's how what I interpret equation 12). Does anyone have an idea how this relates to the second law of thermodynamics? I would like to know if this is a good question or a stupid question. Thanks for any response.