 This is equivalent to saying that if we do not have the distinction between what is “given” and what is “added by the mind,” or that between the “contingent” (because influenced by what is given) and the necessary (because entirely “within” the mind and under its control), then we will not know what would count as a “rational reconstruction” of our knowledge. We will not know what epistemology’s goal or method could be (PMN, 168–9).