deals with the physical world Eek, don't like it. What is "the physical world"? Or rather, what isn't part of "the physical world"? It's just a matter of creat

deals with the physical world Eek, don't like it. What is "the physical world"? Or rather, what isn't part of "the physical world"? It's just a matter of creating models for phenomena of increasing complexity. Just as biology studies a set of phenomena emergent from enormous amounts of bio-chemical interactions, which are emergent from quantum physics, etc., economics is emergent from the psychology, beliefs, and interactions of people.