The article does acknowledge this point, and offers a possible solution. In the edit at the end, i t suggests a system for distinguishing those who initiate def

The article does acknowledge this point, and offers a possible solution. In the edit at the end, i t suggests a system for distinguishing those who initiate defection from those who respond to ti with defection, and in principle that could make defecting against a group that didn't do anything "wrong" a wrong thing.