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Geometric Unity: phenomenal advance, or crazy theory?

Marcus du Sautoy has this week presented to the world the physics of Eric Weinstein. ‘Geometric Unity’, apparently, argues “that the seemingly baroque features of the standard model of particle physics are in fact inexorable and geometrically natural when generalizations of the Yang-Mills and Dirac theories are unified with one of general relativity”.

Apparently, du Sautoy and Weinstein were postdocs together in the 1990s. Weinstein is a mathematical physicist turned economist who has been working on his these ideas privately for 20 years. Two years ago, he started to explain his thoughts to Marcus in a bar in New York.