If the operators corresponding to two observables do not commute, they have no simultaneous eigenstates and they obey the uncertainty principle. A state where one observable has a definite value corresponds to a superposition of many states for [another] observable.

— Wikipedia on Quantum superposition

.

That is a major mistake of the many-worlds interpretation of quantum mechanics.

— Me@2021-03-07 06:11:22 PM

.

.

2021.03.08 Monday (c) All rights reserved by ACHK