uncanny valley ? Whenever we talk about AI in the lab, the assumption always is that the first AIs will resemble people with profound mental retardation or brain damage. That said, having an AI that can pass for a person with mental disability is still a major milestone. I don't think this represents that... I'm hoping that most of these responses are hard coded in a vast dictionary somewhere ( are we certain ours are not ? I know that I hash bits of conversation and store them for later, but I'm weird ).