> there is very little inherent conceptual justification for the technical descriptions we have of quantum systems other than that 'they work'. That's true of

> there is very little inherent conceptual justification for the technical descriptions we have of quantum systems other than that 'they work'. That's true of all scientific theories when you reach their roots. That does not change the fact that QM pedagogy is generally a disaster because it follows the historical development and emphasizes the single-particle case and de-emphasizes entanglement and decoherence, which makes the measurement process appear deeply mysterious and incomprehensible when in fact it is quite simple and straightforward. It's still very weird and unintuitive, but it is far from incomprehensible, as Feynman famously claimed. It is simply not true that "no one understands quantum mechanics" and it hasn't been true for a very long time.