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The Importance of Decoherence in Quantum Physics
There's an approximation that is good and we start out approximately classical because of decoherence. But you can ask why the universe, both in its initial conditions and in its laws of physics, allows for classical mechanics to be a good approximation. We don't talk about that when we teach people quantum mechanics. Maybe we should. There's another level of the question though. I mean those two things together are the basic answer you would give.