The ball goes down at a spiral tube. Can your physics say whether the ball goes left, straight, or right after it leaves the tube and rolls on the flat plane?
It's too hard for psychometricians because answers within 10° of the exit tangent were marked correct, so even reality is sometimes wrong.

>>16723616 (OP)
Deviations from the predicted outcome are results of imperfect information e.g. the fault of the one presenting the question.