"If you go through the list of things that are not possible you're left with a very finite amount of possibilities. The fancy name for this is constraint theory. It's a nonquantitative model, but it's a field of mathematics."

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In the 'in-itself' there is nothing of 'causal connections', of 'necessity', or of 'psychological non-freedom'; there the effect does not follow the cause, there is no rule or 'law'. It is we alone who have devised cause, sequence, for-each-other, relativity, constraint, number, law, freedom, motive, and purpose; and when we project and mix this symbol world into things as if it existed 'in itself', we act once more as we have always acted- mythologically.

— Friedrich Nietzsche