He published a paper with some colleagues on a way to disprove Everettian Mechanics. It falls into the difficult but not impossible category. It involves lookin

He published a paper with some colleagues on a way to disprove Everettian Mechanics. It falls into the difficult but not impossible category. It involves looking for minuscule energy spikes that would be evidence of some kind of "collapse of the wave function" that would rule out Many Worlds. The Copenhagen Interpretation isn't a theory, it it is an attitude.