принцип случайности(The circles are not arranged according to a mathematically calculated system, rather according to the principle of chance Andrey Truhachev)
принцип случайности(All selections, however, are subject to the principle of contingency: it was as it was, it could have been different, though not arbitrarily differentAndrey Truhachev)
принцип безразличия(The principle of indifference (also called principle of insufficient reason) is a rule for assigning epistemic probabilities. Suppose that there are n > 1 mutually exclusive and collectively exhaustive possibilities. The principle of indifference states that if the n possibilities are indistinguishable except for their names, then each possibility should be assigned a probability equal to 1/n. wikipedia.org)