> ...how is the indifferent mechanism of evolution to deal with a trait which... when left unchecked, can spiral out of control to the level of species extincti

> ...how is the indifferent mechanism of evolution to deal with a trait which... when left unchecked, can spiral out of control to the level of species extinction? I suppose if we accept that alien life and civilizations do or will exist, then in the long run such traits, and counterbalancing social behaviours, will be subject to selective pressure. In the very long run.