Ted Talks - How the mind works

At a conference about ideas, it's important to step back and consider the engine that creates them: the human mind. How exactly does the brain -- a three-pound snarl of electrochemically frantic nervous tissue -- create inspired inventions, the feeling of hunger, the experience of beauty, or the sense of self -- and how reliable is it?

http://www.ted.com/themes/how_the_mind_works.html