Nirmalya Guha has just published on the Journal of Indian Philosophy (2013, no. 41) an interesting article about "An Onto-Epistemic Analysis of Absence". Guha's article is clear and well-written and nicely separates ontology and epistemology. The ontological question about absence (abhāva) is, in Guha's formulation,
Last, he offers his own support to the Prābhākara view that absences are not ontologically different from their locus and that no separate epistemic tool is required to know them. In fact, he explains, the absence of X is real, but at the ontological level it is nothing but the presence of Y, W, Z. And for him "making ontology is making an inventory of the world. And my claim is that such an inventory does not need any absence". As for the epistemic question, no further instrument of knowledge is required, agrees Guha, although a further psychological process is in fact needed, to shift from one's perception of the floor to one's cognition of the absence of the pot on it. But, as with Prābhākaras, "Since no epistemic instruments capture x —rather they fail to capture x— when the subject cognises that 'x is absent from y', the cognition of absence is not caused by any epistemic factor. […] But cognizing absence is an introspection of some sort" (p. 127).
If you think that Guha's denial of a separate instrument of knowledge for seizing absences is parasitic on the denial of an ontological existence of absences, I think you are right. Guha argues as follows:
A different perspective is Kumārila's, according to whom absences do not exist ontologically as separate state of affairs, but are a modality seized by a distinct instrument of knowledge (the one which enables us to notice "my glasses are not on the desk!" instead of just seeing the desk's surface).
Is an absence ontologically different from its locus?Whereas the epistemic question is:
Does a separate epistemic tool (pramāṇa) other than sense organs apprehend an absence?Further, Guha draws a nice table summarizing the answers of Nyāya and of Bhāṭṭa and Prābhākara Mīmāṃsā to the two questions.
Last, he offers his own support to the Prābhākara view that absences are not ontologically different from their locus and that no separate epistemic tool is required to know them. In fact, he explains, the absence of X is real, but at the ontological level it is nothing but the presence of Y, W, Z. And for him "making ontology is making an inventory of the world. And my claim is that such an inventory does not need any absence". As for the epistemic question, no further instrument of knowledge is required, agrees Guha, although a further psychological process is in fact needed, to shift from one's perception of the floor to one's cognition of the absence of the pot on it. But, as with Prābhākaras, "Since no epistemic instruments capture x —rather they fail to capture x— when the subject cognises that 'x is absent from y', the cognition of absence is not caused by any epistemic factor. […] But cognizing absence is an introspection of some sort" (p. 127).
If you think that Guha's denial of a separate instrument of knowledge for seizing absences is parasitic on the denial of an ontological existence of absences, I think you are right. Guha argues as follows:
- 1. no absence exists
- 2. instruments of knowledge only grasp existing things
- 3. thus, no distinct instrument of knowledge for absence exists
A different perspective is Kumārila's, according to whom absences do not exist ontologically as separate state of affairs, but are a modality seized by a distinct instrument of knowledge (the one which enables us to notice "my glasses are not on the desk!" instead of just seeing the desk's surface).