[larsiusprime]

> even though even somewhat simple model extensions might significantly change their behavior (e.g. going from single to repeated games, which makes cooperatives strategies viable).

He explicitly examines this in the application, did you not run through it? He actively encourages you to modify the rules and see how it changes the results.

[tpeo]

I ran through it. I didn't suggest he didn't cover it. I just used it as a trivial example, because other readers supposedly also ran through it. Some other commenter suggested communication between agents as an extension, I could've used that if I knew what results from it.