„The development of modern science is marked by a pronounced tendency toward indeterminism. A somewhat brutal description of this tendency may be states as follows. In relation to some phenomena, instead of trying to establish a (deterministic) functional relationship between a variable y, and some other variables x1, x2, …, xn, we try to build a (stochastic or probabilistic) model of these phenomena, predicting frequencies with which, in specified conditions, the same variable y will assume all of its possible values.“
— Jerzy Neyman
p. 401 of "Statistics—servant of all sciences." http://www.jstor.org/stable/1751553 Science 122, no. 3166 (1955): 401–406.