The Argument for Keynes and Deficit Spending (posted by DT)

I had some exciting email correspondence with my conservative group on the topic of Keynes and whether recent events have proved him wrong or right. Here's an edited version of my argument. I'm not very good with the layout on this site, so the graphs are at the top instead of where I want them- sorry!

I keep hearing how Keynesian economics is dead from those who don't seem to understand it. But the history of the last 80 years is great evidence that Keynes was right, that governments should run deficits during recessions and stimulate the economy. Let's start with the Great Depression. See the second graph above, with GDP charted during the period.

As you can see, FDR took office in 1933 when the Depression was at its nadir. He started Keynesian deficit spending and voila!, the economy started recovering. But there was a second recession in 1937-38; did government overspending cause it? Let's look at the federal deficit during the depression- see the top chart for when the feds were using deficit spending.

Notice that the deficit goes way up starting in 1932 (I guess Hoover gets some credit too! I didn't know that), and then dips severely starting in 1936, just in time for the next recession. Then it goes through the roof for WW II (in fact that peak is WAY higher than the current deficit), and yet the economy came roaring back.

So the Depression is a perfect example of how deficit spending helps an economy in recession.

How about since then? Well, recessions after 1945 have been much shorter in duration (on average) than recessions were before that time- recessions starting in 1900 lasted 23, 13, 24, 23, 7, 18, 14, 13, and 43 months. The recessions after 1945 lasted 8, 11, 10, 8, 10, 11, 16, 6, 16, and 8 months (the last listed here is the early 1990s one). Why is that? Because of Keynesian spending- we learned how to deal with deficits, and so now we spend our way out of them.

I've yet to hear any other convincing explanation for these numbers. Can we please stop arguing about whether Keynes was right?