foundations were laid in Victorian times. Now it is changing radically. Standard economics is suddenly being challenged by a number of new approaches: behavioral economics, neuroeconomics, new institutional economics. One of the new approaches came to life at the Santa Fe Institute: complexity economics.

emergent phenomena, ergodicity, radical uncertainty, and computational irreducibility.

In the century and a half since Charles Darwin published On the Origin of Species, we still are stymied by the complexity of the biosphere, and, just as with our financial systems, our efforts to intervene have often led to confounding results.