Okay, I'm gonna take the bait. > Sort of a quantum superposition, which collapses the wavefront in different ways for different people? Maybe tie in multiple u

Okay, I'm gonna take the bait. > Sort of a quantum superposition, which collapses the wavefront in different ways for different people? Maybe tie in multiple universes somehow, and events shift from one to the other. Then the observers with differing memories would actually live in different "multiverse tracks" (different universes with a common origin in the past) and would never interact with each other, ever again. The fact that they can interact, even indirectly via a 3rd party like a cross-examiner, is proof that they live in the same worldtrack, and therefore the wave has "collapsed" the same way for both.