Eliezer_Yudkowsky comments on Quantum Explanations - Less Wrong
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Comments (56)
Density matrices were specifically what I had in mind when I talked about dragging in great big complicated math tools before people understand what's going on at a fundamental level.
I didn't know mixed states were a battleground, but it's pretty easy to imagine. Confusion about the subjective Bayesian character of statistical mechanics + confusion about the objective character of quantum states = extreme confusion about mixed states, right?