His answer on why he does not believe in Computer Science is pretty convincing. What I would love to have happened is a professor telling me that what I am going to be learning is not exactly science. Nobody did, so I spent a couple of years trying to scientify things.
That's funny because one of the first things my first CS professor said (paraphrased): computer science is very poorly named--it isn't a science and it isn't about computers.
I was not that lucky. But I later watched a couple of videos from SICP and it made sense. :)