I think there's (at least theoretically), the idea that folks could flock like birds or fish in a shoal and all make independent motions based on observation of

I think there's (at least theoretically), the idea that folks could flock like birds or fish in a shoal and all make independent motions based on observation of others with no heirarchical orders and self-organize into a coherent mass which is efficiently moving in the same direction, but I haven't seen it arise in practice so far.