Flip Side of Complex System

Complex connected system: “more is different”
How does individual behavior aggregate to collective behavior?

Biology: Although genes, like people, exist as identifiable units, they function by interacting, and the corresponding patterns of interactions can display almost unlimited complexity. (sounds like Go)

Sociology is even more complex.

However, there is the flip side of complex systems: While knowing the rules that govern the behavior of individuals does not necessarily help us to predict the behavior of the mob, we may be able to predict the very same mob behavior without knowing very much about the unique personalities and characteristics of the individuals that make it up. (from Duncan Watts)