Dear PF Forum, Determinism. 1. Is there determinism? 2. Because we can't measure the electron position, it doesn't mean there's no determinism? Heisenberg uncertainity principle states, per wiki: But because we can't measure it, it doesn't mean that the universe itself is indeterministic? Everything should be determined right from the beginning? Even if there's no (or there will be?) technology to measure even the movement of 1 electron? Thanks.