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Bits of Reality

Not just for codes and computers, quantum information holds clues to the nature of the physical universe

Ask any physicist to name the top two theories of the 20th century, and you’ll almost always get the same automatic answer: Einstein’s relativity and quantum mechanics. But lately a few 21st century thinkers have hinted that maybe the third-place theory should move up a notch. In the wake of the computer revolution, information theory might deserve to displace relativity in the rankings.

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