Quantum theory has been universally successful in describing phenomena at all levels accessible to experiment. It’s a perfect cookbook, for whatever we choose to cook up. However, this comprehensive practical success has been accompanied by an unprecedented disagreement as to what quantum theory actually means, and a corresponding confusion as to what sort of reality supports the phenomenal world. In the next chapter I examine some of the contradictory quantum realities which different physicists claim to be the “real reality” that lies behind the external appearances of this world we live in.
