Last night Jon Stewart addressed the peculiar campaign to have the U.S. Treasury mint a platinum coin worth $1 trillion in order to save the country from insolvency. He was not so sure about this! Even though it is the logical conclusion of fiat currency, Jon! But he was very willing to play along: "If we're just going to make shit up, I say go big or go home," he said. "How about a twenty trillion dollar coin?" (He also suggested an equally imaginary Eisenhower-era quillion-dollar bill featuring a centaur and a unicorn.)