TL;DR – No quantum state is more uncertain than the other. All states can be identified by a set of perfectly prepared quantities. When studying quantum mechanics, you may get the (wrong) impression that some states are better defined than others. Some are eigenstates while others are just a superposition. Or that the gaussian packets, …
TL;DR – Commutators, like Poisson bracket, tell us how a quantity changes under a transformation generated by another. Commutators play a fundamental role in quantum mechanics. Mathematically, they tell us how multiplication between operators behaves but this does not provide any physical insight. What is more interesting physically is that they are intimately related to …
TL;DR – Subjective experiences, like consciousness, are outside of what can be experimentally tested. I was at a bar, tired from a long day, when a person started pestering me with questions: “Doesn’t the brain process electrical signals, which is ultimately explained by quantum physics?” “Doesn’t quantum physics say that things happen only because we …