Is Unemployment Caused by a Skills Mismatch?

Friday's story, "Can America's Unemployed Fill American Jobs?" looked at the extent to which high unemployment is structural and how much is cyclical. Zachary Karabell of economic research and consulting firm River Twice thinks much of what we're seeing is structural. Mike Konczal of the Roosevelt Institute, on the other hand, argues unemployment is mostly cyclical, or tied to the economic cycle.