In 2002, the recipient of the Nobel Prize in Economics was oddly enough awarded to a classically trained psychologist. Daniel Kahneman is considered to be one of the world's most influential individuals in the field and is the founder of a unique and revolutionary new field known as Behavioral Economics.
I believe that one of the biggest things that will occur in this century is the diminution of theories of national economics. What's happening in Greece and Argentina right now suggests that this should happen -- sooner rather than later. Each of these countries is in conflict with the national law of a foreign country. Greece is in conflict with German law, Argentina with U.S. law.