Paul Krugman: Time to Borrow

The campaign still has three ugly months to go, but the odds — 83 percent odds, according to the New York Times’s model — are that it will end with the election of a sane, sensible president. So what should she do to boost America’s economy, which is doing better than most of the world but is still falling far short of where it should be?

There are, of course, many ways our economic policy could be improved. But the most important thing we need is sharply increased public investment in everything from energy to transportation to wastewater treatment.