[dr_lew]

There are probably only a dozen people on the planet who really understand QM.

Feynman always said it was a mistake to try and understand it. If you did, you would "go down the drain into a blind alley, from which no one has ever escaped." You just have to accept it.

[piytar]

Thing is, Feynman understood it. So he was down that rabbit hole.

PS I studied under one of his protegees. He understood it. Few do. I can do the math, but I don't truly understand it beyond the basics.