Comment by superposeur

My path crossed Nguyen many years ago and I can vouch that he is a very smart, nice, ethical, and solid dude who knows his stuff. I’m also a physicist and know enough about the relevant math and physics to evaluate Nguyen v. Weinstein, though I haven’t processed either of their papers deeply. But, fwiw, Tim’s critique is detailed and readable. In particular, what he says about a faulty complexification step makes perfect sense and would spell death for an approach to unification that hinges on detailed accidents of representation theory (as Weinstein’s seems to). To really judge this, I’d have to delve into Weinstein’s baroque-yet-vague theory, which I’m unwilling to do as I’m pretty sure it would be a waste of time.