I am writing an essay as part of my philosophy course on thinking machines. The essay is geared towards Descarte and Turing's ideas on the matter. I would appreciate any ideas on what the main arguments are and what I have to refute etc. Also I would appreciate any solid information on advancements in AI recently. It's very hard to get a clear picture on the net of exactly how far AI has come. No one has so far been able to give a definitive answer to this question.