The weather was unseasonably cool this past week in the Phoenix area. Thank you Savior Obama for curbing the effect of global warming and bringing rain to the desert. Why do we use currency as a medium of exchange instead of direct barter? What is the government's proper role in currency, and how does government's manipulation of the currency affect the economy? How did we get where we are, and what's the libertarian solution to problems associated with a government-controlled currency?