All of Autodidact's Comments + Replies

You would have to examine the source code outside of the PREFIX section. Many programming languages have preprocessing directives like #define which would allow you to do something like this:

#define COOPERATE DEFECT

Where the compiler would replace instances of "COOPERATE" with "DEFECT". I can think of few other ways to game this without touching the code between the PREFIX tags.

1Vladimir_Nesov
This is beside the point, even if it were true: you are not helping in constructing the least convenient possible world.
2whpearson
Programs with defines above prefix, don't begin with prefix... check the pseudo code.

Information wants to be anthropomorphized. ~ Anonymous

Don't anthropomorphize computers. They hate that.