something called spin hats, but there's other particles we know about with spin one, that's like the foton, and there's hypothetical particles not yet seen with spine zero. supersymmetry is a mat mat call symmetry relating all those particles and they can be rotated into the others. now, if that's the case, for that to be true, there has to be a certain other class of particles not yet observed that the known particles we know about turn into under this kind of rotation. those are the supersymmetric particles. for the electrons, it's partner under this semitry. the cork and neutrons, neutron. i don't name them. for every known particle there's a cousin called a sparticle. we are looking for the sparticle. if they are there, it confirms the idea. if not, we don't either have sufficient accelerators or it means they do not exist. that's the current state. >> right. it's a beautiful theory, but we don't know if it has anything to do with the real world. >> we don't. >> the problem with math mathematics and physic is goes back to an english fizzist who united quantum mechanics with relativity,