A lot of your questions Octane, can be answered by reading a few books. I originally came across these books by a recommendation on Slashdot (
http://slashdot.org/). These books are not light reading, they go very in depth into the subject matter. Go to Amazon.com and search for "consciousness" under "books". You'll get a number of hits for book titles and authors, where you can either purchase them or go to your local library and check them out for a while.
Consciousness Explained by Daniel C. Dennett:
http://www.amazon.com/exec/obidos/t...f=sr_1_1/002-8976740-9076019?v=glance&s=books
The Mind's I by Douglas Hofstadter and Daniel C. Dennett:
http://www.amazon.com/exec/obidos/t...f=sr_1_2/002-8976740-9076019?v=glance&s=books
I think that consciousness requires some intelligence though the reverse is not true. I also don't like the term "artificial intelligence", there's nothing artificial about it; it either exists or it doesn't. There are rules for which our individual neurons fire and do not fire in response to stimuli. I'm not going to go into a lot of detail here, READ THESE TWO BOOKS! You'll understand much better about how difficult it would be to create a sentient being. Can it be done, YES, in time, first modifiying an existing organism, like a cat, dog, or even better, another primate. Will we create sentient beings like "Data" from Star Trek? Of course, right around the time we are flying through the galaxy at warp speed. THAT's a long way off. Will we create an consciousness similar to that found in the movie "Artificial Intelligence"? Maybe, in about 200 years. Why will it take that long? We have to first figure out the human genetic code. Why? So we can reverse engineer that, so we can understand the genes that not only code for our proteins, which is not difficult by any means, but more importantly, to understand how we developed with our abilities. It is suggested that we share about 95% of the genetic code with our closest primate relative. After we can account for the ~5% of genetic code that gives us that edge, the ability to plan ahead, deal with abstract ideas, work with ideas in our minds and communicate them, account for personalities, then we can start making sentient beings like ourselves. It's all a very long ways away. Unfortunately, we'll never see it.
Another good book that more or less touches on the subject is an essay by Mark Twain titled "What Is Man?" - a good read about "Man the Machine", who can be no better or expected to exceed performance of its make "genetics".
Way back in June of 2003, in this thread (Question-Answer thread):
http://www.macosx.com/forums/showthread.php?p=224605&highlight=consciousness#post224605
I asked "On a fundamental level, what is consciousness?" and Cat answered:
A: a secondary non-autnomous act of second order, directed at an autonomous primary act of first order. The primary act (or sense-datum) notices something, the secondary act, occurring contemporarily within the primary act has this act itself as its content. While the first act is consciousness of a content, the second act is consciousness of the act, and hence the most basic form of consciousness, since without it we would be mere stimulus-respons machines.
Basically, this says that we perceive a "story" and are aware of it, and can participate in it in our own mind, or to go join in the story. That requires intelligence, a memory, and knowledge of the physical world. READ THE TWO BOOKS I suggested, you'll understand! And have a good dictionary by your side when you do, you'll be increasing your vocabulary too.