The quantum Zeno effect is named after the ancient Greek philosopher Zeno of Elea, who posed philosophical problems in the form of a set of paradoxes, one of which is known as the arrow paradox. Zeno considered an arrow in flight that, he argued, must inhabit a particular position in space for every instant of time. If the arrow could be glimpsed at that instant then it would be indistinguishable from a truly motionless arrow suspended in the same position. The paradox is that the flight of an arrow consists of a sequence of these frozen slices in time, with a motionless arrow at each point
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