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In fact any experiment that measures a quantum effect is one in which the quantum effect is aligned with the behavior of some heavy, macroscopic object; that's how we measure it.

事实上，任何测量量子效应的实验都是量子效应与某些重的宏观物体的行为一致的实验;这就是我们衡量它的方法。

— Murray Gell-Mann 默里·盖尔·曼