[michaels0620]

He answers this in his faq (http://rogeralsing.com/2008/12/09/genetic-programming-mona-l...):

Q) Is this Genetic Programming?, I think it is a GA or even a hill climbing algorithm.

A) I will claim that this is a GP due to the fact that the application clones and mutates an executable Abstract Syntax Tree (AST).

Even if the population is small, there is still competition between the parent and the child, the best fit of the two will survive.

[ufo]

No matter how he tries to twist things, its still just regular hill climbing though.

The whole point of GAs is giving you a very simple heuristic for avoid local optima. How are you going to do that if your population size is only 2?