If the present state of an object is known it is possible to predict by the laws of classical mechanics how it will move in the future (determinism) and how it has moved in the past (reversibility).
Kui keha hetkeseisund on teada, on klassikalise mehaanika seaduste abil võimalik ennustada keha liikumist tulevikus (determinism) ja määrata keha liikumist minevikus (pööratavus).