accuracy conditions analyzing perceptual argue that perceptual austere relationalism austere relationalists belief capacities that function capacity to discriminate ceptual Chapter cognitive concepts constituted by employing constitutively a matter content type difference discriminate and single discussion employing perceptual capacities environment epistemic force epistemology experiencing subject experiential externalist factive evidence failing to single Fregean particularism function to discriminate function to single gappy grounded Hallie hallucination insofar instantiated justified mental activism metaphysical mind-independent particulars modes of presentation naïve realism one’s particularity thesis particulars perceived perceived particulars perception is constitutively perceptual capacities employed perceptual consciousness perceptual content perceptual evidence perceptual experience perceptual knowledge perceptual particularity perceptually related phenomenal character phenomenal evidence phenomenological particularity Premise properties property-instances proposition propositional attitude purports to single qualia qualitatively identical relational particularity relevant representational content representationalism role sensorily aware sensory awareness relation single out particulars Swampman thesis that perceptual token content uninstantiated virtue virtue epistemology white cup