Every axiomatic (abstract) theory admits, as is well known, an unlimited number of concrete interpretations besides those from which it was derived. Thus we find applications in fields of science which have no relation to the concepts of random event and of probability in the precise meaning of these words.

        ---A.N. Kolmogorov

Foundations of the Theory of Probability, 2d English ed., translation edited by Nathan Morrison, Chelsea, New York, 1956, page 1; for the German original see Grundbegriffe der Wahrscheinlichkeitsrechnung, Springer-Verlag, Berlin--New York, 1977, reprint of the 1933 original.

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