From Laplace, 1799: Assume an intelligence that at a given moment knows all the forces that animate nature as well as the momentary positions of all things of which the universe consists, and further that it is sufficiently powerful to perform a calculation based on Jim these data. It would then include in the same formulation the motions of the largest bodies in the universe and those of the smallest atoms. To it, nothing would be uncertain. Both future and past would be present before its eyes. Ref: Ivars Peterson, Newton's Clock, p. 229