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  Foroohar’s point is pretty simple. The US economy is far from ship-shape right now — just look at the unemployment rate, or the employment-to-population ratio, or the median wage, or any other measure of how the broad mass of Americans is faring. The 2009 stimulus might have done a bit of good at the margin, but here we are, five years after the crisis, and the Federal Reserve still feels the need to pump $85 billion a month into the economy in its latest round of QE, on the grounds that interest rates are at zero and can’t be lowered any further. The economy, in other words, finds it hard to stay afloat without artificial aid.