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Sean Carroll on Roger Penrose

Summary:
Aside: "r" is the radial coordinate, the distance from the center. But spacetime is tricky, and inside the Schwarzschild radius the r coordinate points along time, not in a direction of space. r=0 isn't the center of the black hole, it's in the *future*. 9/

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Aside: "r" is the radial coordinate, the distance from the center. But spacetime is tricky, and inside the Schwarzschild radius the r coordinate points along time, not in a direction of space. r=0 isn't the center of the black hole, it's in the *future*. 9/

Miles Kimball
Miles Kimball is Professor of Economics and Survey Research at the University of Michigan. Politically, Miles is an independent who grew up in an apolitical family. He holds many strong opinions—open to revision in response to cogent arguments—that do not line up neatly with either the Republican or Democratic Party.

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