I don’t think it was particularly central; while he did give it as an argument, drnickbone also gave examples of people cooperating on one-shot PD’s, both in formal experiments and in practice (eg choosing to tip at a foreign restaurant to waiter who will never be seen again.)
I don’t think it was particularly central; while he did give it as an argument, drnickbone also gave examples of people cooperating on one-shot PD’s, both in formal experiments and in practice (eg choosing to tip at a foreign restaurant to waiter who will never be seen again.)