In a football stadium, the crowd's emotions arise from the chatter of individual fans. If mood could be both joyful and sorrowful at once, you'd have a quantum superposition. But the murmur of thousands of voices instantly forces that blend into a single definite state.

So it is with large objects: their quantum superpositions are destroyed by the internal noise of myriads of particles. This noise, linked to entropy, a measure of disorder, acts like random interference, forcing the uncertainty to collapse as suddenly as a supernova flares in the sky. Physicists have shown that the standard Schrödinger equation handles this without invoking an observer — it all follows from standard quantum theory. Thus the puzzle that tormented Schrödinger, von Neumann, and Born is solved: Born's rule, which predicts probabilities, is derived from first principles. Microscopic chaos itself imposes order on the large-scale world.