The first problem I see here is that roughly every CEO would like an artificial programmer. The second is that "a module for chatting with human beings" on the level you portray sounds a lot more general than you give it credit for. I'm guessing you didn't mean that part literally, and that you know a utility function does not have to be explicit. But I think you fail to imagine in sufficient detail what "limited goals" people might actually give an AI in the next century.

I second wedrifid's comment.