Online research in philosophy

Conventional approaches to consciousness assume that our current science tells us within tolerable limits what physical nature is. Because nature so understood cannot explain consciousness as we seem to experience it ourselves, explaining consciousness becomes a problem. One solution is to rethink what consciousness is so that it becomes the sort of thing our current natural science could in principle explain. Whitehead takes the opposite approach, using the existence of consciousness as a clue to what nature must be if it can generate something like consciousness. The justification for this approach can be found in Whitehead’s implicit indictment of descriptive phenomenology. According to Whitehead, the seemingly insoluble problem of explaining consciousness naturalistically is an artifact created by the assumption that consciousness faithfully samples the world, when in fact it obscures the very aspects of nature that are indispensable to understanding how anything, including consciousness itself, could emerge through a physical process.

What place does consciousness have in the natural world? If we reject materialism, could there be a credible alternative? In one classic example, philosophers ask whether we can ever know what is it is like for bats to sense the world using sonar. It seems obvious to many that any amount of information about a bat's physical structure and information processing leaves us guessing about the central questions concerning the character of its experience. A Place for Consciousness begins with reflections on the existence of this gap. Is it just a psychological shortcoming in our merely human understanding of the physical world? Is it a trivial consequence of the simple fact that we just cannot be bats? Or does it mean there really are facts about consciousness over and above the physical facts? If so, what does consciousness do? Why does it exist? Rosenberg sorts out these problems, especially those centering on the causal role of consciousness. He introduces a new paradigm called Liberal Naturalism for thinking about what causation is, about the natural world, and about how to create a detailed model to go along with the new paradigm. Arguing that experience is part of the categorical foundations of causality, he shows that within this new paradigm there is a place for something essentially like consciousness in all its traditional mysterious respects. A striking feature of Liberal Naturalism is that its central tenets are motivated independently of the mind-body problem, by analyzing causation itself. Because of this approach, when consciousness shows up in the picture it is not introduced in an ad hoc way, and its most puzzling features can be explained from first principles. Ultimately, Rosenberg's final solution gives consciousness a causally important role without supposing either that it is physical or that it interacts with the physical.

In his Confessions, Augustine lamented, “What, then, is time? If no one asks me, I know: if I wish to explain it to one who asks, I know not.” In this respect, consciousness is like time. If no one asks me what consciousness is, I know. To pay attention to something is to become conscious of it. Indeed, everything with which I can be familiar ­­ from the sound of your footsteps to my own daydreams ­­ can be an object of my consciousness. Yet, if I wish to explain consciousness to one who asks, I know not. I (and, I suspect, we) have little theoretical grip on the nature of consciousness. Not for nothing did Schopenhauer call the problem of consciousness ‘the world knot.’ What, then, is consciousness?

Consciousness often presents itself as a problem for materialists because no matter which physical explanation we consider, there seems to remain something about conscious experience that hasn't been fully explained. This gives rise to an apparent explanatory gap. The explanatory gulf between the physical and the conscious is reflected in the broader population, in which dualistic intuitions abound. Drawing on recent empirical evidence, this essay presents a dual-process cognitive model of consciousness attribution. This dual-process model, we suggest, provides an important part of the explanation for why dualism is so attractive and the explanatory gap so vexing.

On the first page of The Problem of Consciousness (1991), Colin McGinn asks "How is it possible for conscious states to depend on brain states? How can technicolour phenomenology arise from soggy grey matter?" Many philosophers feel that questions like these pose an unanswerable challenge to physicalism. They argue that there is no way of bridging the "explanatory gap" between the material brain and the lived world of conscious experience (Levine, 1983), and that physicalism about the mind can therefore provide no answer to the "hard problem" of why brains give rise to consciousness (Chalmers, 1996).

The question has long confounded philosophers and scientists, and it is this so-called explanatory gap between biological life and consciousness that Evan ...

In this provocative book, Fred Dretske argues that to achieve an understanding of the mind it is not enough to understand the biological machinery by means of...

According to the self-representational theory of consciousness – self- representationalism for short – a mental state is phenomenally conscious when, and only when, it represents itself in the right way. In this paper, I consider how self- representationalism might address the alleged explanatory gap between phenomenal consciousness and physical properties. I open with a presentation of self- representationalism and the case for it (§1). I then present what I take to be the most promising self-representational approach to the explanatory gap (§2). That approach is threatened, however, by an objection to self-representationalism, due to Levine, which I call the just more representation objection (§3). I close with a discussion of how the self-representationalist might approach the objection (§4).

Conscious experience presents a deep puzzle. On the one hand, a fairly robust materialism must be true in order to explain how it is that conscious events causally interact with non-conscious, physical events. On the other hand, we cannot explain how physical phenomena give rise to conscious experience. In this wide-ranging study, Joseph Levine explores both sides of the mind-body dilemma, presenting the first book-length treatment of his highly influential ideas on the "explanatory gap," the fact that we can't explain the nature of phenomenal experience in terms of its physical realization. He presents a careful argument that there is such a gap, and, after providing intriguing analyses of virtually all existing theories of consciousness, shows that recent attempts to close it fall short of the mark. Levine concludes that in the foreseeable future consciousness will remain a mystery.

No contemporary philosopher has tried harder to demystify the mind than Fred Dretske. But how to demystify it without eviscerating it? Can consciousness be explained? Many philosophers think that no matter how detailed and systematic our knowledge becomes of how the brain works and how it subserves mental functions, there will always remain an "explanatory gap." Call it a brute fact or call it a mystery, trying to explain consciousness, they think, is as futile as trying to explain why there is something rather than nothing. Dretske is not exercised by the explanatory gap-he'd rather exorcise it. He thinks we can get all the explanation we need by understanding what consciousness does. Consciousness is at bottom sensory experience and what it does, essentially, is to represent the world. Explaining consciousness, therefore, comes down to understanding the representational character of experience.