 Other foundationalists have responded to PEW by denying the Metaevidential Principle. Most such views have rejected both parts of the standard argument for the Metaevidential Principle  (3.1  above), but one important exception is worth noting. Chisholm (1966, 1977) agrees with the classical foundationalist that perceptual beliefs are based on appearance beliefs but denies that any argument for the legitimacy of the appearance-reality inference is needed. Chisholm posits as a fundamental epistemic principle that if one is justified in believing herself to be perceptually appeared to as if p, then one is prima facie justified in believing that p. The significance of insisting that this principle is fundamental is to insist on the legitimacy of the move from p-appearance to p-reality while denying that that legitimacy is derived from deduction or abduction.