Economists and economic commentators have started to push back against the attacks of liberal mainstream economists on Bernie Sanders’s economic proposals and the analysis of the consequences of those proposals by Gerald Friedman.
Here’s a quick rundown:
Matthew Klein notes that the “supposedly ‘extreme’ and ‘unsupportable’ forecast” that was part of Friedman’s analysis merely “implies American output will return to its previous trend just as Sanders would be finishing up his second term, in the third quarter of 2024.”
we have no insight into the macroeconomic effects of Sanders’s entire programme, which has lots of moving parts and would not just affect things like the quantity of infrastructure investment and the distribution of income, but also the incentives to work and take risks. Our point is a simple one: a prolonged period of rapid growth in the US is plausible, with the right policy mix. The burden of proof should be on those who say otherwise.
David Dayen makes much the same point (that Friedman’s “economic growth numbers would simply eliminate the GDP gap that was created by the Great Recession and was never filled in the subsequent years of slow growth”) and then notes that the growth projections of some of the liberal critics (such as Laura Tyson, Christina Romer, Austan Goolsbee, and Alan Krueger) were themselves far off the mark.
Economist Jamie Galbraith (pdf), who was Executive Director of the Joint Economic Committee in 1981-82, agrees that “skepticism about standard forecasting methods is perfectly reasonable” but then observes that Friedman’s methods are actually pretty mainstream.
It is not fair or honest to claim that Professor Friedman’s methods are extreme. On the contrary, with respect to forecasting method, they are largely mainstream. Nor is it fair or honest to imply that you have given Professor Friedman’s paper a rigorous review. You have not.
What you have done, is to light a fire under Paul Krugman, who is now using his high perch to airily dismiss the Friedman paper as “nonsense.” Paul is an immensely powerful figure, and many people rely on him for careful assessments. It seems clear that he has made no such assessment in this case. . .
Let’s turn, finally, to the serious question. What does the Friedman paper really show? The answer is quite simple, and the exercise is – while not perfect – almost entirely ordinary.
What the Friedman paper shows, is that under conventional assumptions, the projected impact of Senator Sanders’ proposals stems from their scale and ambition. When you dare to do big things, big results should be expected. The Sanders program is big, and when you run it through a standard model, you get a big result.
Finally, economist Joshua Mason makes five main points about Friedman’s analysis of of the results one might expect from Sanders’s programs.
First, conventional wisdom in economics is that an exceptionally deep recession should be followed by a period of exceptionally strong growth. Second, the growth in output and employment implied by the paper are more or less what is required to return to the pre-recession trend. Third, discussions of macroeconomic policy in other contexts imply the possibility of growth qualitatively similar to what Jerry describes. Fourth, it is not necessarily the case that the employment Jerry projects would exceed full employment in any meaningful sense. Fifth, if you don’t believe a growth performance at this level is possible, that implies a sharp slowdown in potential output, for which you need a credible story.
In Mason’s view, the fifth point is the most important. And the bottom line is this:
Ten years ago, the CBO expected GDP to be $20.5 trillion (correcting for inflation) as of the end of 2015. Today, it is $18.1, trillion, or about 12 percent lower. Similarly, the employment-population ratio fell by 5 points during the recession (from 63.4 to 58.4 percent) and has risen by only one point during the past six years of recovery. Either these facts — unprecedented in the postwar period — reflect a shortfall of effective demand, or they don’t. If they do reflect a lack of demand, then there is no reason the expanded pubic spending and downward redistribution that Sanders proposes cannot close the gap, with a period of high growth while output and employment return to trend. (The fact that such high growth hasn’t been seen in the postwar period is neither here nor there, since there also has been no comparable deviation from trend.) Alternatively, you may think that the shortfall relative to previous growth rates reflects a decline in potential output. But then you need to offer some explanation of why the growth of the economy’s productive capacity slowed so abruptly, and you need to apply this belief consistently. I think it’s more reasonable to believe that the gaps in output and employment reflect a demand shortfall. In which case, the Sanders plan could in principle have the kind of results Friedman describes.
As for myself, I believe there is a debate worth having—which, alas, the liberal mainstream critics are attempting to shut down.
If however we let that debate unfold, it will show that contemporary capitalism produces a grotesquely unequal distribution of income, a crumbling physical and social infrastructure, inadequate healthcare, heavily indebted college students, a Too Big to Fail financial sector that threatens another collapse, and slow rates of growth that simply cannot employ the U.S. working-age population.
All that Sanders’s proposals and Friedman’s analysis demonstrate is how far we’ve fallen and what it would take for the United States to reverse those disturbing trends.