"Both candidates are only tinkering at the edges of the most important issue facing the United States: the hollowing out of the employment marketplace, the disappearance of mid-level jobs......
Michael Spence, a professor at N.Y.U.’s Stern School of Business, and David Autor, an economist at M.I.T., have argued that this “hollowing out” process is a result of twin upheavals: globalization and the hyper-acceleration of technological progress."