Is Our Economy Too Complicated for Our 18th-Century Political System?

Can a democratic system function efficiently in an advanced economy in our modern, globalized world? A system based, say, on a couple of 18^th century documents updated occasionally by nine people in black robes and a two-chambered legislature that must devote at least as much time to the raising of funds to re-elect itself? I think it can—eventually—but not everyone agrees.