From the point of view of physics, it is a miracle that [seven million New Yorkers are fed each day] without any control mechanism other than sheer capitalism.

The recycling of resource by the aggregate behavior of a diverse array of agents is much more than the sum of the individual actions.

Looking back to data, we can see if the consequences are plausible; looking forward to theory, we can see if general principles are suggested.

From the point of view of physics, it is a miracle that [seven million New Yorkers are fed each day] without any control mechanism other than sheer capitalism.

This use of building blocks to generate internal models is a pervasive feature of complex adaptive systems.

Evolution continually innovates, but at each level it conserves the elements that are recombined to yield the innovations.

If we are to understand the interactions of a large number of agents, we must first be able to describe the capabilities of individual agents.