American - Mathematician | August 26, 1951 -
It's an exaggeration to say that I came up with M-theory.
Edward Witten
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Quantum mechanics brought an unexpected fuzziness into physics because of quantum uncertainty, the Heisenberg uncertainty principle. String theory does so again because a point particle is replaced by a string, which is more spread out.
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One very important aspect of string theory is definitely testable. That was the prediction of supersymmetry, which emerged from string theory in the early '70s.
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I have a tendency, more than most other physicists, to try to figure out everything all at once, before I publish. And even to try to figure out everything in my head, without pencil and paper.
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We know a lot of things, but what we don't know is a lot more.
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If you are a researcher, you are trying to figure out what the question is as well as what the answer is.
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