Feynman’s claim in 1966 that “Nobody understands QM” thus inadvertently illustrates one of the other great truths, which is that nobody knows what nobody knows.
I don’t think he was actually trying to say nobody understands quantum, I’m pretty sure he was actually saying (albeit in less words): “just because you don’t understand quantum, does not mean that you are unintelligent, or that the theory is incorrect”. I believe that as you pointed “nobody knows what nobody knows”, implies that he wouldn’t make such a statement with the intentions that it should be take literally, and consequently it seems significantly more probable that the intentions of the statement were something else entirely.
I would also like to note that the statement “nobody knows what nobody knows” has only one piece of evidence attached to it, and I am curious were else you noticed it taking effect.
I don’t think he was actually trying to say nobody understands quantum, I’m pretty sure he was actually saying (albeit in less words): “just because you don’t understand quantum, does not mean that you are unintelligent, or that the theory is incorrect”. I believe that as you pointed “nobody knows what nobody knows”, implies that he wouldn’t make such a statement with the intentions that it should be take literally, and consequently it seems significantly more probable that the intentions of the statement were something else entirely.
I would also like to note that the statement “nobody knows what nobody knows” has only one piece of evidence attached to it, and I am curious were else you noticed it taking effect.