Originally posted by twhitehead
We are probably just misunderstanding each other.
If a photon leaves a light source, passes through a slit and hits a screen, quantum mechanics can tell us the probability of it hitting in any given location: this is a rule. Quantum mechanics cannot tell us exactly where it will hit. The exact location we call 'random' because we know of no rule that det ...[text shortened]... he word 'random' means 'no deterministic rule'. Randomness is specifically the absence of rules.
yeah, but the position isn't random.
It follows a probability distribution... It can't therefore be random.
If it were random there would be equal probability of it arriving at any given point.
The fact that there is a probability distribution means that it's not random, and
that it's following rules.
EDIT: also, random doesn't mean non-deterministic.
If I have a grid of white pixels and then start randomly flipping one pixel at a time from either white to
black or black to white depending on it's starting colour.
Then each pixel with have an equal chance of being the one that is flipped in each iteration.
However, if it's non-random then there will be a probability distribution, or deterministic pattern that
decides which pixel gets flipped.