[MarkPNeyer]

quantum mechanics is neither deterministic (due to quantum superposition) nor random (we can make predictions).

i don't see how this is controversial or silly.

[ajuc]

I don't know which meaning of random you have in mind, but we can make predictions about random "things".

If I understand correctly if we measure qubit that is in 10/90 superposition of 0 and 1, we have 0.1 and 0.9 chance of it becoming 0 and 1 respectively. We can predict, that it would probably be 1, but it is still random.

Or am I wrong?