Now, my argument in favour of Chalmer's position, is that experience is irreducibly first-person. In other words, it is not an object or a phenomenon, in the sense that things that we experience are objects or phenomena. So the question is not 'why do we have consciousness?' but 'what is consciousness?', which is really a question about the first-person nature of experience. — Wayfarer
I'm only nitpicking: The way I read this it might, or might not, convey an implicit assumption of the permanency of the self … even in so far as consciousness/experience not being possible devoid of something other which is experienced. I’m presuming this will be much ado about nothing new to you, all the same:
Where one to take the experiences of all those who are reputed to have had intense spiritual experiences—this via meditations or otherwise—their awareness/consciousness in such instances increase far beyond what our average commonplace states of consciousness are. Hence, were such experiences to be believed as non-bogus, then the magnitude of our consciousness can become greatly amplified in terms of both quantity and quality of awareness.
Hallucinogen-based experiences, such as those of Aldous Huxley in his “Doors of Perception”, greatly complicate matters in terms of preferred ontological explanations, but they are reported to occur all the same. When not going haywire, these again purportedly endow selves with increased awareness that is often enough coupled with a highly increased sense of selfless being (i.e., increased impartiality of awareness relative to all that is other in normal states of being, with its hypothetical zenith being that of an experienced, complete non-duality of being/awareness ... attested to by some within history).
Cases such as these speak toward the possibility of consciousness becoming far more and qualitatively far different than what we take it to be in everyday life.
Having addressed the generally more pleasant, in not wholly imaginary (as many atheists will believe), aspect of the conscious self holding the potential to transmute into something much greater than ordinary human conscious being, there then are the more explanatorily accessible instances where human consciousness can become diminished, fragmented, or else cease holding presence.
To dwell a great deal on DSM examples of mental disorders would get depressing, but, in passing, there is everything from extreme cases of schizophrenia, to multiple personalities, to catatonia, to sleep walking with awareness of the external world, to states of indefinite unconsciousness. In these cases, at least typically, the awoken human consciousness becomes less and other than what it ordinarily is as a unified point of view, such that it is no longer as functional, if at all so.
Less unnerving are the ordinary transitions from wakefulness to sleep, in which our ordinary awoken consciousness becomes gradually reduced in magnitude; would be termed hallucinatory if its sometimes occurring, half-awoken experiences would likewise occur while fully awoken; and eventually cease to hold presence—until, in some instances, it then holds presence as a first person point of view during REM dreams—after which it again awakens and thereby holds an awoken presence.
In all aforementioned cases, what it is like to so be/experience still holds. But all these examples—both of increased magnitude, including instances of non-dualistic awareness rich in meaning, and of decreased magnitude of human consciousness, including that of a lack of presence—do point to there not being such a thing as a permanent conscious state of being—ultimately, not even to a necessary first person point of view in order for awareness to be.
In other words, there is no requirement for awareness to be a self as typically understood and held onto by most everybody: one which is differentiated from everything that is other and is thereby dualistic in its experienced being; one which defines itself (e.g., I am stupid/smart, talented/a klutz, poor/wealthy, etc.) and then clings onto its own self-produced definitions of what it is as an otherwise intangible awareness/self.
I get that there’s a linguistic quagmire when it comes to what consciousness signified and how the term is used; to me, though, it nevertheless seems blatant that there is a clear cut distinction between consciousness per se and being conscious of, this as a staple part of our commonsense understandings.
I tend to think you’d agree with more rather than less of what I’ve mentioned … ?