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4 See, for example, Lisa B. Kahn, “The Long-Term Labor Market Consequences of Graduating from College in a  Bad Economy," Labour Economics 17(2) (April 2010): 303–16. 5 Jerome H. Powell, “Recent Economic Developments and Longer-Run Challenges" (speech delivered at the  Economic Club of Indiana, Indianapolis, November 29, 2016). 6 Timothy Massad, “Remarks before the 2016 P.R.I.M.E.