THE DARK AGES. “I used to say that if you gave me a trillion dollars to build a sentient or conscious machine I would give it back. I could not honestly say I knew how it works. When I read philosophy or neuroscience papers about consciousness, I don’t get the sense we’re any closer to understanding it than we were 50 years ago.”
http://www.techinsider.io/artificial-intelligence-machine-consciousness-expert-stuart-russell-future-ai-2015-7