An absence and its locus are the same ontological entity. But the cognition of the absence is different from the cognition of the locus. The cognitive difference is caused by a query followed by a cognitive process of introspection. The moment one perceptually knows y that contains only one thing, z, one is in a position to conclude that y contains the absence of any non-z. After having a query as to whether y has x one revisits one’s knowledge of (...) y containing z and comes to know that x is absent from y. Thus the knowledge of the absence of x logically follows from the knowledge of y containing z through the mediation of a query. This analysis goes against the thesis according to which an absence is an irreducible entity that is to be known through senses, and is inspired by the Mīmāṃsā views, especially the Prābhākara views, on absence and its cognition. (shrink)

Intuitively, we often see absences. For example, if someone steals your laptop at a café, you may see its absence from your table. However, absence perception presents a paradox. On prevailing models of perception, we see only present objects and scenes (Marr, Gibson, Dretske). So, we cannot literally see something that is not present. This suggests that we never literally perceive absences; instead, we come to believe that something is absent cognitively on the basis of what we perceive. But this (...) cognitive explanation does not do justice to the phenomenology. Many experiences of absence possess immediate, perceptual qualities. One may further argue that the ability to detect certain absences confers strong adaptive advantage and therefore must be as primitive and fundamental to humans as seeing positive things. I argue that we can literally see absences; in addition to representing objects, perception represents absences of objects. I present a model of seeing absence based on visual expectations and a visual matching process. The phenomenon of seeing absence can thus serve as an adequacy-test for a theory of perceptual content. If experiences of absence are possible, then we have another reason (following Siegel) to reject the view that perceptual content is restricted to colors and shapes. Furthermore, if the proposed account is correct, then we have grounds for dissociating seeing absence from other imagery-based phenomena termed “perceptual presence-in-absence” (Noë, Macpherson). (shrink)

From the early modern period, Western epistemologists have often been concerned with a rigorous notion of epistemic justification, epitomized in the work of Descartes: properly held beliefs require insulation from extreme skepticism. To the degree that veridical cognitive states may be indistinguishable from non-veridical states, apparently veridical states cannot enjoy high-grade positive epistemic status. Therefore, a good believer begins from what are taken to be neutral, subjective experiences and reasons outward—hopefully identifying the kinds of appearances that properly link up to (...) the world and those that do not. Good beliefs, beliefs that are justified (warranted, etc.), are those that a believer has .. (shrink)

I would like to thank the editors of Philosophy East and West for courteously asking me if I would like to respond to Matthew Dasti and Stephen Phillips' very thoughtful remarks about the review I wrote of Phillips' translation and commentary on the pratyakṣa chapter of Gaṅgeśa's Tattvacintāmaṇi, prepared in collaboration with N. S. Ramanuja Tatacharya (Phillips and Tatacharya 2004). Let me begin by reaffirming what I said at the beginning of my review, that the book is "a monumental and (...) momentous achievement, one whose importance cannot be understated." I have indeed enormous admiration for the magnitude of their achievement and respect for the contribution they have made through this translation to the field of .. (shrink)

The study of metacognition can shed light on some fundamental issues about consciousness and its role in behavior. Metacognition research concerns the processes by which people self reflect on their own cognitive and memory processes (monitoring), and how they put their metaknowledge to use in regulating their information processing and behavior (control). Experimental research on metacognition has addressed the following questions: First, what are the bases of metacognitive judgments that people make in monitoring their learning, remembering, and performance? Second, how (...) valid are such judgments and what are the factors that affect the correspondence between subjective and objective indexes of knowing? Third, what are the processes that underlie the accuracy and inaccuracy of metacognitive judgments? Fourth, how does the output of metacognitive monitoring contribute to the strategic regulation of learning and remembering? Finally, how do the metacognitive processes of monitoring and control affect actual performance? Research addressing these questions is reviewed, emphasizing its implication for issues concerning consciousness, in particular, the genesis of subjective experience, the function of self-reflective consciousness, and the cause-and-effect relation between subjective experience and behavior. (shrink)

Misperception is part of the human condition. Consider a classic case of coming to confirm that one has had a misperception. On a stroll through the woods you see, in the distance, what seems to be a person. As you draw near, what looked like a person now appears to be a wooden post with a hat on it. On arrival you touch the post to confirm that it is not a person. From a pre-theoretical perspective, what has happened? On (...) your approach you judged that there was a person, based on what you saw. When near, you judged that it was a post and not a person, and then by touch you confirmed that what you initially saw was a misperception.In examining cases of misperception it is important to ask: what role does concept .. (shrink)

Recently, Jonardan Ganeri reviewed the collaborative translation of the first chapter of Gaṅgeśa's Tattvacintāmaṇi by Stephen H. Phillips and N. S. Ramanuja Tatacharya (Ganeri 2007). The review is quite favorable, and we have no desire to dispute his kind words. Ganeri does, however, put forth an argument in opposition to a fundamental line of interpretation given by Phillips and Ramanuja Tatacharya about the nature of pramāṇa, knowledge sources, as understood by Gaṅgeśa and, for that matter, Nyāya tradition. This response is (...) meant to answer the argument and reassert an understanding of pramāṇa as factive, that is, as knowledge sources that are inerrant. We argue that this is the best reading of Gaṅgeśa himself .. (shrink)

This book is a defence of a form of realism which stands closest to that upheld by the Nyãya-Vaid'sesika school in classical India. The author presents the Nyãya view and critically examines it against that of its traditional opponent, the Buddhist version of phenomenalism and idealism. His reconstruction of Nyãya arguments meets not only traditional Buddhist objections but also those of modern sense-data representationalists.

The study of the feeling of knowing may have implications for some of the metatheoretical issues concerning consciousness and control. Assuming a distinction between information-based and experience-based metacognitive judgments, it is argued that the sheer phenomenological experience of knowing (''noetic feeling'') occupies a unique role in mediating between implicit-automatic processes, on the one hand, and explicit-controlled processes, on the other. Rather than reflecting direct access to memory traces, noetic feelings are based on inferential heuristics that operate implicitly and unintentionally. Once (...) such heuristics give rise to a conscious feeling that feeling can then affect controlled action. Examination of the cues that affect noetic feelings suggest that not only do these feelings inform controlled action, but they are also informed by feedback from the outcome of that action. (shrink)

The article reviews the book " Epistemology of Perception : Gaṅgeśa's Tattvacintāmaṇi, Jewel of Reflection on the Truth : The Perception Chapter Transliterated Text, Translation, and Philosophical Commentary," by Stephen H. Phillips and N. S. Ramanuja Tatacharya.