My review of Quantum Enigma: Physics Encounters Consciousness mentions the idea that quantum states are states of knowledge not because I think that it currently provides all the answers, but because it was not among the many interpretations surveyed by the authors, although it is an important one, going back to Heisenberg, and it undermines their argument that consciousness may affect physical phenomena.

My own attitude is sketched at the beginning of my review. Anybody reviewing a book on quantum foundations ought to declare at the outset the angle from which he currently regards that elephant. I do indeed believe that physicists often get into deep conceptual trouble by naively reifying too many of their abstract mathematical constructions. Among the over-reifications I explicitly included quantum fields, through my reference to quantum electrodynamics. I did not mention decoherence as providing all the answers because I find its purported solution to many...

AAPT members receive access to the American Journal of Physics and The Physics Teacher as a member benefit. To learn more about this member benefit and becoming an AAPT member, visit the Joining AAPT page.