Earlier quoted context omitted.
Tribalism necessitates an “other”. If we discovered intelligent life on other planets and were suddenly given that “other”, I imagine humans would very quickly all come together as the same tribe. Minor differences between humans (including nationality) would stop mattering in less than a lifetime.
Yes it needs "other". We can however define this "other" intelligently to encircle the negative phenomena of society and define the rest as the society we are. And hopefully it doesn't split even parents and children or husbands and wives like it does right now, based in silly things like sports, religion and politics. By saying this I've pretty much killed my cred for anyone reading this in the US right now. But tha…
Because you're saying that we need to unite and expel the "negative," but you're either suggesting that we don't use any criteria for that, or you're using a special definition of "religion and politics" that doesn't encompass all forms of human organization and ranges of perceptions of our environment.
I suppose this is just another suggestion that we use rational, objective criteria, like the ones the person making the suggestion uses (when they're at their self-assessed best.) Once we're using those criteria, uniting to eradicate the "other" is fully rationalized, er, rational.