At bottom, what knowledge accomplishes, the sense of its claim to validity or justification, th sense of the distinction between valid knowledge and knowledge that merely makes a pretense to validity, is in question; as is, the other side, the sense of objectivity, which and what it whether it is known or not, and yet as an objectivity is an objectivity of a possible knowledge, in principle knowable even if it has as a matter of fact never been known or will be knovm, in principle perceivable, imaginable, and detenni able by predicates in a possible judgment, etc.