You can not predict the future state from the current state, not even in principle. Measure the spin of an electron along two different axis, to the best of ou

You can not predict the future state from the current state, not even in principle. Measure the spin of an electron along two different axis, to the best of our knowledge - or maybe just my - the result of the second measurement is not predictable by anything. Of course only until it turns out that hidden variables is the correct interpretation and that the hidden variables can be measured, then this also becomes the other kind of randomness.