I think you really have to have natural selection at work to kill off (or least, prevent from reproducing) those who don't accept the changes in a culture.
One could argue that that happens naturally unless an outside force intervenes and disturbs the natural process. Africa is a good example for that. Because gimmedats nothing changes.
One could argue that that happens naturally unless an outside force intervenes and disturbs the natural process. Africa is a good example for that. Because gimmedats nothing changes.