Perfect and good have been battling one another forever. Perfect needs to lay off. Now!

“You say you want a revolution? Well, you can’t always get what you want — but if you try sometimes, you just might find, you get what you need.” With these words Paul Krugman ends Learning from Obama, his April 1 column for the New York Times. In the piece Mr. Krugman notes:

• the 10,000,000 new private sector jobs during the past seven years (along with still disappointing economy);
• the Obamacare successes, including a huge increase in the number of people with insurance, fewer employers dropping coverage, and lower than expected costs;
• financial sector reforms which include, most notably, far less leverage in