An interesting point. One thing I think you're missing, however, is the "dingo ate my baby" angle. We fear that which we do not understand: mysterious strangers at the park, for example. How do we avoid the dangers of mysterious strangers at the park? Well, as the news will tell us, we do it by reporting all suspicious activity and keeping our kids close. How do we avoid dingoes eating our babies? We stay out of the Outback.