My contention is that the rational expectations models are the intellectual heirs of these central planning models. Not in the sense that individuals in these rational expectations models aim at planning the whole, but in the sense that, as the central planner, they understand the whole picture. These individuals use this superior information to obtain the "optimum optimorum" for their own private welfare. In this sense they are top-down models.
The first sentence is one to ponder, as Tyler would say. But the rest of the paper did not excite me. Pointer from Mark Thoma. [UPDATE: More de Grauwe here. Thanks to a commenter on another post for the pointer.] In another post, Mark points to two other interesting pieces.
"Hindsight is a wonderful thing," said Timothy W. Long, the chief bank examiner for the Office of the Comptroller of the Currency. "At the height of the economic boom, to take an aggressive supervisory approach and tell people to stop lending is hard to do."
Another sentence to ponder. When I say that there is difference between the personality of an entrepreneur and the personality of a bureaucrat, this is an illustration. Entrepreneurs take ownership of mistakes and seek to learn. Bureaucrats makes excuses and seek to deflect blame.
I don't think there's any mystery here. The reason that unemployment was slower to fall after the last two recessions than in previous recoveries was that GDP growth was anemic.
He says that Okun's Law, which relates GDP growth to unemployment, has held up consistently over the past forty years. No structural change to see here. Move along.
However, Okun's Law results from two relationships--productivity and labor force participation. Both of these relationships have changed dramatically. We are seeing much higher post-recession productivity growth (reducing the ratio of jobs to GDP) and a larger decline in labor force participation (cushioning the impact on the unemployment rate). Those of us who see the latest two recoveries as jobless recoveries are not idiots. If you look at the unemployment rate, sure, there is nothing unusual to see. But if you look at payroll employment and hours worked, they support the jobless recovery story.