If you wanted to engineer the strongest possible recovery in the US economy, you would try to create two things. First, and most important, you would want robust jobs growth, with employers adding positions, the unemployed — and especially the long-term unemployed — finding new jobs, and the proportion of Americans with jobs rising steadily. Secondly, you would want to introduce errors into the monthly jobs report. You would try to make jobs growth seem weaker than it really was, and unemployment higher. By doing that, you would keep monetary policy — and market expectations for future monetary policy — as accommodative as possible. That in turn would keep both short-term and long-term rates low, which would provide extra fuel for the recovery.