Physicists say it is the closest thing to real Harry Potter-ish magic that they’ve ever seen: nonlocality, the ability of two particles to remain synchronized across the vastness of space, as if each has lost its individual identity. Einstein called it “spooky action at a distance” and, since his time, physicists have discovered it in an ever-widening circle of phenomena: not just subatomic particles, but also black holes, the workings of gravity, and the primordial universe. Musser sets out to do what isn’t usually done in discussions of the nonlocality: not just to describe how weird it is, but also to seek a rational explanation. It turns out that nonlocality may reveal a deeper layer of reality on which space and time break down.
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