You still have p, v, R, and T, but in such abstruse mathematical forms that they don't lend themselves well to mental images. They lost me yesterday with that Lorentz symmetry violation. Diffeomorphism? Serious.
They lose me almost every time their lips start flappin', lol. But I still love to think about what they're saying. Yeah, never heard of a
diffeomorphism in all my years in math. Doesn't surprise me, tho. A person can only know a teeny, tiny little part of math nowadays.