I have some questions: Was it von Neuman that first brought up the idea that self-reference could be the reason behind the measurment problem? The idea seems to be that since a measurment device can't measure all possible interactions between a particle an itself the system (device and particle) will collapse and take on a random value. The measurment problem is a consequence of "the impossibility of self-measurement". Is this view still present in quantum physics? Can entanglement be cyclic or self-referential? Is EPR style entanglement self-referential? Eventually, is the self-reference possible to pinpoint by doing the math?