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To Understand Gravity, Toss a Hard Drive into a Black Hole
We cannot scrutinize it using particle accelerators like we can with the other forces, so we need other ways to get at quantum gravity. Enter black holes. Bekenstein argued that this black hole entropy must not be proportional to the black hole’s volume, but to the area of its event horizon. And then throw that hard drive into a black hole. The stored information cannot be lost, so it must be contained in the surface area of the black hole (albeit scrambled).
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