The dickish Wall Street Journal now demands that you subscribe, or it won't show you the story you came to see. So I have to go back to Noah for this Barro quote:
To achieve a real recovery, government policy should focus on individual incentives to work, produce and invest. Central here are tax rates and regulations, including especially clarity about future policies.
I'm looking at this: "especially clarity about future policies".
Barro is saying we should tweak tax rates and regulations one last time, and never fiddle with them again.
Perhaps he should ask economists and policymakers to sign a pledge promising never to consider any policy but his. Which leads me to ask a question:
What, then, is economics for?