The Wave Function in a Complex System

I think there's something in there, right? Because I think part of what he's trying to say is that... It's like the ultimate mathematical validation of Mox principle. But I'm not sure if by putting that H-bar K, that propagation vector, he hasn't already done everything he needs to do to switch it into a quasiparticle. In fact, he's got an XRD photograph while he's doing that. He's saying that he has this higher inertia, and that's by taking the propagation vector and dividing it by the speed of the electron in the material.