I agree. In my opinion, the biggest restriction on growth, right now, is the availibility of skilled labor which is becoming more and more difficult to find.
You make a most interesting comment. Unless we get a collapse of the banking system, which the Federal Reserve allowed to happen in the 1930s, slowdowns and mild recessions are usually the result of overhangs of supply here that we have to work off in some places, along with excess demands in some other places, which imbalances cannot be worked through instanteously. This would correspond to simultaneously seeing an uptick in unemployment and in job listings.