Perhaps it's time, evolutionary economists argue, to focus less on finding the best way to foresee the economic future and more on explaining how the economy works. That discovery may lie in modeling the economy as a complex system based upon the three core concepts of Darwinism: variation, selection, and inheritance. "We're not saying it's identical. We're not saying the mechanisms are the same," Hodgson says. "The key issue is whether there is an ontological similarity in terms of the structure of reality that crosses the two domains, that's similar in biology and similar in the economic sphere."