Math goes through stages. (As a retired engineer views things.) Cool math of no use. And overnight it solves a problem. And everyone has to scramble to learn that math.
Matrix and tensors were cool math. And suddenly they solved things.
Matrix and tensors were cool math. And suddenly they solved things.
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Ten years from now a math system developed a 100 years ago will solve a problem that is important. And everyone will scramble to learn something that was considered unimportant.
https://en.wikipedia.org/wiki/Space%E2%80%93time_block_code
I got to work with Siavash for a while at Intel. We didn't always agree. But he was right about one thing which is why things didn't go well for Intel Wireless. (Answer requires lunch and a beer.)