Later Nyāya philosophers maintain that absences are real particulars, irreducible to any positives, that we perceive. The fourteenth-century Nyāya philosopher Gaṅgeśa argues for a condition on absence perception according to which we always perceive an absence as an absence of its counterpositive, or its corresponding absent object or property. Call this condition the ‘counterpositive condition’. Gaṅgeśa shows that the counterpositive condition is both supported by a plausible thesis about the epistemology of relational properties and motivates the defence of absence as (...) irreducible. But against Gaṅgeśa, the sixteenth-century Nyāya philosopher Raghunātha and his seventeenth-century commentators Bhavānanda, Jagadīśa, and Gadādhara identify cases in which the counterpositive condition fails. In this article, I examine the Nyāya-internal debate over this condition. I conclude that Raghunātha makes a compelling case that the counterpositive condition fails. (shrink)

This is a brief philosophical introduction to, and an annotated translation of, the section on absence from Śālikanātha’s Pramāṇapārāyaṇa (Study of the Instruments of Knowledge), a foundational work of Prābhākara epistemology. In this section, which focuses on the epistemology of absence, Śālikanātha argues against the Bhāṭṭa view that there is a sui generis instrument of knowledge (pramāṇa) by which we learn of absence (abhāva). He does so by arguing for a subjective reductionist thesis about absence, according to which the absence (...) of a perceivable (dṛśya) object at a locus is identical with a positive state of awareness (buddhi) whose content includes the locus but not the perceivable object. If correct, Śālikanātha argues, we should therefore learn of absence in the same ways we acquire self-knowledge more generally. While developing his reductionism about absence, Śālikanātha responds to a range of concerns, including the objection that his view cannot explain causation by absence. (shrink)