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"On the other hand, we don't understand the theory too completely, and because of this fuzziness of spacetime, the very concept of spacetime and spacetime dimensions isn't precisely defined."
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"The whole theory of the universe is directed unerringly to one single individual."
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Personal Development

"The problem is that replacement of Quantum Mechanics by Quantum Field Theory is still very demanding."
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"Never worry about theory as long as the machinery does what it's supposed to do."
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"If the Confederacy fails, there should be written on its tombstone: Died of a Theory."
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"I'm not sure what theory is, unless it's the pursuit of fundamental questions."
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"Although I know a lot of the previous shuttle flights, in theory, had their tasks laid out; but there were still some changes that came along for them."
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"The theory of founder effects does not explain how novel features like plumage traits arise."
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"I have this theory- that if we're told we're bad, then that's the only ideal we'll ever have."
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"A mathematician is a person who can find analogies between theorems; a better mathematician is one who can see analogies between proofs and the best mathematician can notice analogies between theories."
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"Never abandon a theory that explains something until you have a theory that explains more."
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"The theory has to be interpreted that extra dimensions beyond the ordinary four dimensions the three spatial dimensions plus time are sufficiently small that they haven't been observed yet."
Time

"String theory is an attempt at a deeper description of nature by thinking of an elementary particle not as a little point but as a little loop of vibrating string."
Nature

"Quantum mechanics brought an unexpected fuzziness into physics because of quantum uncertainty, the Heisenberg uncertainty principle."
Physics

"If I take the theory as we have it now, literally, I would conclude that extra dimensions really exist. They're part of nature. We don't really know how big they are yet, but we hope to explore that in various ways."
Nature

"Spreading out the particle into a string is a step in the direction of making everything we're familiar with fuzzy. You enter a completely new world where things aren't at all what you're used to."
Direction

"On the other hand, we don't understand the theory too completely, and because of this fuzziness of spacetime, the very concept of spacetime and spacetime dimensions isn't precisely defined."
Theory

"There was a long history of speculation that in quantum gravity, unlike Einstein's classical theory, it might be possible for the topology of spacetime to change."
Change

"As of now, string theorists have no explanation of why there are three large dimensions as well as time, and the other dimensions are microscopic. Proposals about that have been all over the map."
Time

"I wouldn't have thought that a wrong theory should lead us to understand better the ordinary quantum field theories or to have new insights about the quantum states of black holes."
Thought

"You have that one basic string, but it can vibrate in many ways. But we're trying to get a lot of particles because experimental physicists have discovered a lot of particles."
Trying
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