Migeru has some interesting ideas about analogies between thermodynamics and economics and fluid dynamics and economics.
But all of these areas are a bit far afield from my own area of expertise.
The dynamics of nonlinear differential equations might also be worth a shot (i.e. classical chaos theory - but if you google nonlinear differential equations, you'll get less pseudophilosophical crap than if you google chaos theory).
- Jake If you only spend 20 minutes of the rest of your life on economics, go spend them here.
