"I am 99% certain that for at least most of the time I was on, I was chatting with a real person. In my opinion, there is no way a mere mortal will ever be able to design a machine which can talk like that. I consider myself a philosopher. I studied the mind/body problem in college and am very interested in the truth of whether I was ever talking to a machine at any point in the conversation. To me it is important to know the truth. Perhaps it is simply a "human" instinct that we simply want to know what is inside a box which we cannot see inside. "