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Tuesday, July 28, 2020

Do We Need a Theory of Everything?

Nicely put.  The math does not to be easy, or visual or nice.   Just predict real things correctly.

Do We Need a Theory of Everything? in Nautilus
Posted By  Sabine Hossenfelder

I get constantly asked if I could please comment on other people’s theories of everything. That could be Garrett Lisi’s E8 theory or Eric Weinstein’s geometric unity or Stephen Wolfram’s idea that the universe is but a big graph, and so on. Good, then. Let me tell you what I think about this. But I’m afraid it may not be what you wanted to hear.

Before we start, let me remind you what physicists mean by a “Theory of Everything.” For all we currently know, the universe and everything in it is held together by four fundamental interactions. That’s the electromagnetic force, the strong and the weak nuclear force, and gravity. All other forces that you are familiar with, say, the van der Waals force, or muscle force, or the force that’s pulling you down an infinite sequence of links on Wikipedia, these are all non-fundamental forces that derive from the four fundamental interactions. At least in principle.

This whole idea of a theory of everything is based on an unscientific premise.... "

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