Even before string theory, especially as physics developed in the 20th century, it turned out that the equations that really work in describing nature with the most generality and the greatest simplicity are very elegant and subtle.
Interpretation
The quote highlights the beauty and elegance of scientific equations that effectively describe the natural world.
Edward Witten emphasizes that throughout the evolution of physics, particularly in the 20th century, the most effective equations in capturing the complexities of nature exhibit a remarkable elegance and subtlety. This suggests that beauty and simplicity are often intertwined with the profound truths of the universe, reflecting the idea that complex phenomena can often be explained by elegantly simple mathematical frameworks.
In practice
During a lecture about the fundamental laws of physics, this quote could illustrate the harmony between beauty and science.
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.
But the beauty of Einstein's equations, for example, is just as real to anyone who's experienced it as the beauty of music. We've learned in the 20th century that the equations that work have inner harmony.
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.
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.
Regardless of any deviations, it was clear I was supposed to end up in math and physics.
It's an exaggeration to say that I came up with M-theory.
Of course, we would love to know more about the exact moment of Big Bang, but interposing an outside intelligence does nothing to add to that knowledge, as we still know nothing about the creation of that intelligence.
Theoretical physics is one of the few fields in which being disabled is no handicap - it is all in the mind.
The main reason why people should care about research in fundamental physics is the same reason they care about astronomy and cosmology. People, children, want to know what we're made out of, how it works, and why the universe is the way it is.
Mathematics began to seem too much like puzzle solving. Physics is puzzle solving, too, but of puzzles created by nature, not by the mind of man.
The trouble is that the hockey stick graph become an icon and deniers reckoned if they could smash the icon, the whole concept of global warming would be destroyed with it.
Oh leave the Wise our measures to collate. One thing at least is certain, light has weight. One thing is certain and the rest debate. Light rays, when near the Sun, do not go straight.
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