After the New Deal, economists began referring to America’s retirement-finance model as a “three-legged stool.” This sturdy tripod was composed of Social Security, private pensions, and combined investments and savings. In recent years, of course, two of those legs have been kicked out. Many Americans saw their assets destroyed by the Great Recession; even before the economic collapse, many had been saving less and less. And since the 1980s, employers have been replacing defined-benefit pensions that are funded by employers and guarantee a monthly sum in perpetuity with 401(k) plans, which
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