Divine Intervention?
In studying 'An Economic History of the United States', Dr John T Schlebecker. taught me about the pendulum theory. He said the pendulum theory is wrong because it only accounts for back and forth. He said economic history is more like a corkscrew because as you travel the corkscrew, it does move from left to right, then right to left. But it also proceeds. The economic corkscrews are not symmetrical. Sometimes there are small corkscrews within the corkscrew.