Deeply embedded in our evolutionary story is the urge to protect people you have something in common with (and I suppose this works the other way around as well). How easy would it be to hack this trait and increase the chances of world peace by consciously exploiting it on a global scale? Think of it as next-gen UN, but instead of focusing on top-down conflict resolution, we would work from the bottom up and search for things we're passionate about and can connect with people from across the world to collaborate on. Rule #1: teams should not be divided on a country by country basis.