Earlier, on Less Wrong: Quantum Non-Realism

The best you could theoretically do would not include saying anything like, "The wavefunction only gives us probabilities, not certainties." That, in retrospect, was jumping to a conclusion; the wavefunction gives us a certainty of many worlds existing. So that part about the wavefunction being only a probability, was not-quite-right. You calculated, but failed to shut up.

I have the highest respect for any historical physicists who even came close to actually shutting up and calculating, who were genuinely conservative in assessing what they did and didn't know. (...) My scorn is reserved for those who interpreted "We don't know why it works" as the positive knowledge that the equations were definitely not real.