Peter Suber, Nomic is a page by the philosophy prof Peter Suber on the game he invented in 1982 called Nomic which is a game where changing the rules is a move. Rebecca could, if each move involved changing one program, become a programming form of Nomic.
Here is a quote from his page on how to play:
Nomic is a game in which changing the rules is a move. In that respect it differs from almost every other game. The primary activity of Nomic is proposing changes in the rules, debating the wisdom of changing them in that way, voting on the changes, deciding what can and cannot be done afterwards, and doing it. Even this core of the game, of course, can be changed.