Fewer people working means permanently lower tax revenues.

Tax increases appear to have a very large sustained and highly significant negative impact on output. Since most of our exogenous tax changes are in fact reductions, the more intuitive way to express this result is that tax cuts have very large and persistent positive output effects

If every other store in town is paying workers $9 an hour, one offering $8 will find it hard to hire anyone - perhaps not when unemployment is high, but certainly in normal times. Robust competition is a powerful force helping to ensure that workers are paid what they contribute to their employers' bottom lines.

President Obama has repeatedly urged Congress to let the Bush tax cuts expire for those earning more than $250,000 a year. Increasing rates on top earners is an obvious way to raise revenue from those who can afford it most.

Climate change and dependence on foreign oil are problems that won't go away on their own. Tabling plans to deal with them doesn't make it easier for companies to plan and invest; it makes it harder.

Cold-turkey deficit reduction would cause a significant recession. A recent analysis by the Congressional Budget Office estimated that going headlong over the cliff would cause our gross domestic product, which has been growing at an annual rate of around 2 percent, to fall at a rate of 2.9 percent in the first half of 2013.

Honest talk about the deficit is risky. Voters are more enthusiastic about the abstract notion of deficit reduction than about the painful details of accomplishing it.