For a brilliant and comprehensive look at consciousness, try “The Origin of Consciousness in the Breakdown of the Bicameral Mind” by Julian Jaynes. I read this a few years ago and am currently rereading this…his work on the so-called evolution of consciousness within the human being is amazing.
I find his arguments compelling and have devoted a lot of time to considering the consequences of his work…you never get it right when you do this, but I will answer to the best of my ability as I think he would approve.
From the beginning, it’s a mistake to assume that all humans have a similar conscious experience. Perhaps ‘most’ people have a similar conscious experience, but how do you account for children, who are carrying around incomplete tools? How do you account for epileptics who, as it seems, suffer from neurochemical malfunction? How do they experience the world? How do you account for schizophrenia, in which the brain malfunctions in such a way that the afflicted hallucinate images and voices?
The best you can do is say there is a generally-accepted range of normal conscious experience. But even then, how do you quantify this? Who qualifies? Who doesn’t?
And just what is consciousness, in the end? Are you expressing your active consciousness by reading this post? Exactly which part of the present would you call consciousness? Your eyes moving back and forth? Your brain putting these letters into words and sentences then, dare I assume, meaning? Are you conscious of your breathing or the feeling of the seat under your ass? Exactly what is consciousness and how do you define what you’re conscious of at any given moment?
Take the example of a pianist (which Jaynes cites in chapter 1) playing a piano concerto. Is he conscious of his playing? What happens if he tries to become consciously aware of pressing each of his fingers on the piano keys? How long do you think he’ll go before fumbling with his concerto? Perhaps the most talented concert pianists aren’t even conscious of their playing, they’re so enraptured in some higher pleasure…
You can see the beginning of the problem.
It might be argued that the higher mammals (chimps, gorillas, orang’s, babboons) have cognitive structures similar to our own and, indeed, many of these animals have adapted to language forms introduced by scientists and animal experimenters (for lack of a better word). These animals can clearly learn, but is the ability to learn equivalent to consciousness? The answer is clearly ‘no’. Rats and mice can be taught to go this way or this, to press this lever or go through that door, but no one is arguing that rats and mice are fully conscious of their surroundings. Aware, yes; conscious, no.
Awareness is a precondition for consciousness, not the end of the road. I believe Jaynes would argue (and I agree) that consciousness is unique to human beings and, even among humans, a recent development dating back only about 3000 years.
I strongly urge anyone interested in consciousness to read Jaynes’ book. It will change the way you think.
Now, as for the question of how we experience the world and whether other animals experience it similarly…hell, I can’t even get my girlfriend to see my point of view sometimes. What makes you think your dog sees the world the way you do???