Experience never gives its judgments true or strict, but merely assumed or comparative universality (through induction), so that, properly speaking, it must be formulated: so far as we have observed until now, no exception has been found to this or that rule. If, therefore, a judgment is thought with strict universality, i.e., so that no exception at all is allowed to be possible, then it is not derived from experience, but is valid absolutely a priori. Empirical universality is thus only an arb