How Bohr Specifically Adapted the Psychologist William James's "Complementarity" for Physics Many Years After Bohr First Read James's "Complementarity": Setting the Historical Record Straight in Order That James's Complementarity Can Be Properly Evaluated on Its Own Merits for Quantum Measurement

It is important to see James's original complementarity in 1890 independently of Bohr's discussions on complementarity in order that James's conception can be properly evaluated as the correct model for quantum measurement. On the basis of new evidence and a deeper analysis of previous evidence presented here, it is very reasonable to conclude that Bohr read James's complementarity between approximately 1908 and 1912. How Bohr specifically adapted James's complementarity to physics is presented. It is also made clear here that Bohr was aware that he had a choice to adopt complementarity for physics along the lines of James's complementarity and that he rejected this possibility. Instead, in his complementarity for physics, Bohr adopted a very different approach fundamentally based on the necessity of a physical interaction between a physical system and a physical measuring apparatus with an uncontrolled aspect to obtain a specific measurement result. Bohr's detour with the necessity of a physical interaction in the measuring process with an uncontrolled aspect in quantum mechanics has distracted attention away from the possible significance of James's original complementarity in psychology to quantum measurement, including its evaluation on its own merits as to whether it provides the correct conceptual framework for this measurement.