Within [[epistemology]], [[knowledge]] is understood to be [[propositions]] that are backed up by [[data]].<ref>Fred I. Dretske, Perception, Knowledge, and Belief, 18.</ref> | Within [[epistemology]], [[knowledge]] is understood to be [[propositions]] that are backed up by [[data]].<ref>Fred I. Dretske, Perception, Knowledge, and Belief, 18.</ref> |