The nearby chart is an update of one I showed on this page in early July. It depicts how the stock market over the last year and a half has followed a path eerily similar to that of 1937. This week corresponds on the chart to mid-August 1937, when the cumulative effects of massive hikes in personal and corporate tax rates, severe monetary tightening, and aggressive business-bashing by the Roosevelt administration tipped the economy into the "depression inside the Depression." From there, stocks were in for the longest and second-deepest bear market in history.

Thankfully,...