I was thinking long and hard about the survival of our humanity. And it occurred to me that in order to survive, I argue that we should forget about trying to change to many adults. Focus on building a new mindset in children and let that be the governance.
They do have their disputes (not all that often unless bro/sis). Ask a group of kids to make up a game with a ball, any game, they'll be playing 2 hours before the adults have come up with the win win situation in Chapter IV of the bargaining.
There's one big hole in the theory. Who teaches them? Who is free of the racism the violence the crime? It would of course also be important that the economic system should sustain.
Fact is, I bet they could do it a whole lot quicker and we'd be happier.