In fairness though, that period had some of the most significant technological innovations that transformed how we work driving huge gains in productivity.
Originally Posted by atlcomedy
Yes, but the same can be said of the post-World War II period -- and for that matter, even the pre-World War II period!
In the 1950s and '60s we enjoyed rapid technological advances in a lot of areas -- aviation, computers, space program (with all its related spinoffs), etc. Those were significant drivers of economic growth. The only thing that interrupted it was the gross mismanagement of the economy in the 1970s by the government and the Federal Reserve, essentially resulting in a lost decade.
And although the 1930s was obviously an extremely depressing decade, don't forget that it was also a time of fantastic innovation! The state-of-the-art passenger aircraft in 1930 was the Ford Tri-Motor, but by 1940 the 4-engine DC-4 was already on the drawing board. The 1930s also saw the introduction of radar, TV, a better electrical grid, rapidly developing agricultural mechanization, and significant automotive advances. That set the stage for a fantastic boom in the 1940s, interrupted only by World War II. Of course, the war set the stage for boom times in the 1950s and '60s, since much of the industrial capacity of what would otherwise have been our global competitors was bombed away! (It would take almost a generation for it to be more or less rebuilt, which was yet another reason for the difficulties we experienced in the 1970s.)
So we've enjoyed the bounties offered by innovation throughout much of our history.
But my basic point is that an extended period of slow growth can be expected to follow a large, unprecedented, and entrenched increase in government spending. It's sort of like a very big meal that must be digested.