i fonofive just hot a series of pod casts called duck which are hosted by paul dolan at the london school of economics. The whole series is about polarization. What i see going on there is in group, burst out group. And even what i find interesting, and you bring it up in your hacking, the unconscious, you can be randomly put into an in group, and suddenly, if you're asked to give money away, or whatever, you are going to give preference to people you have no idea who they are,. but your name is among theirs on the list. So is very human. Is a funderful experiment is there about those two groups?