I would love it if he found it endlessly fascinating and spent all day programming on his own, but he does need a bit of a push from mom and dad. He enjoys it,

I would love it if he found it endlessly fascinating and spent all day programming on his own, but he does need a bit of a push from mom and dad. He enjoys it, but given the choice, he would still rather play games than make them :-) You didn't pick very good evidence to support the idea that picking a LISP is a great way to get kids to love programming. This only supports the idea that Carmack thinks that learning a LISP is good for his son's development.