Heisenberg’s Uncertainty relation necessarily leads to a revision of the concept of causality. It is possible to determine the coordinate precisely. But the moment we do so, the momentum will acquire an arbitrary value, positive or negative. In other words, in an instant the position of the object will become arbitrarily distant. The meaning of localisation becomes blurred: the concepts that form the basis of classical mechanics are profoundly altered.
– Prigogine and Stengers (1985, p 223)