Knowledge is the Foundation of the Functioning of the Physical World in QM:Everything Goes Through the Wave Function,IncludingNullMeasurements,Expansion of <i>On the Nature of the Change in the Wave Function in A Measurement in Quantum Mechanics(arxiv,1995)</i>

Nothing in quantum mechanics (qm) occurs without the involvement of the wave function (wf); the wf is non-physical. When a measurement is made of 1 quantity, a new wf accompanies the measurement wherein another quantity of the particle is uncertain due to the wf, eg, position requiring many superposed waves and momentum requiring only 1 wave. Many situations showing the indispensability of the wf are discussed. What prevents knowledge based on the wf from being acknowledged as the foundation of the physical world is the assumed unavoidable physical interaction (pi) between the measuring instrument and the physical entity measured in the change in the wf in a measurement. This is explored in part through Feynman’s jolt of a photon on an electron in his 2 slit experiment with a light source between the 2 slits. The origin of this assumed unavoidable pi appears to be Bohr’s description of complementarity. The source for Bohr appears the psychologist W. James who did not include this pi in his complementarity. Without this pi, the central role of the wave function and knowledge derived from it is clearly seen in quantum mechanics. With null measurements (no pi), the problem that appears to originate with Bohr cannot be avoided. It should not have been avoided in 1995.