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.
With its billions of interconnected neurons, whose interactions change from millisecond to millisecond, the human brain is an archetypal complex system.
Just as computer technology and the Internet created whole new industries and extraordinary benefits for people that extend into almost every realm of human endeavor from education to transportation to medicine, genetics will undoubtedly benefit people everywhere in ways we can't even imagine but know will surely occur.
Physics is very muddled again at the moment; it is much too hard for me anyway, and I wish I were a movie comedian or something like that and had never heard anything about physics!
We are part of this universe; we are in this universe, but perhaps more important than both of those facts, is that the universe is in us.
Experimentation is the least arrogant method of gaining knowledge. The experimenter humbly asks a question of nature.
Dreams about the future are always filled with gadgets.
Subscribe for the occasional hand-picked quote. No noise.