I don't understand his point. I'd be very sad if set myself so strict rules. Terminal is powerful, but this doesn't mean not to user X11. I like *nix and open source, but why souldn't I use Windows (which i find very nice system since Windows 7). He says Lisp is powerful, I agree. I prefer Scheme, but it's the same strengh. However it doesn't mean I use only C and scheme. I rather use a rule - match programming language to task you do. Somethimes it's C, sometimes scheme, sometimes perl, sometimes even C#. And so on...