I don't know much about economics, but I know what I like...

[tree_and_leaf]

The recent winner of the Nobel (sort of) prize for economics, Paul Krugman, seems an interesting chap. He's also a total geek with a good sense of humour, as the paper he wrote considering certain aspects of galactic trade demonstrates....

I do not pretend to develop a theory which is universally valid, but it may have some galactic relevance