Greg Ip

Research by James Poterba at the Massachusetts Institute of Technology finds that the wealth of the U.S.'s elderly is highly skewed. About half of retirees have little or no financial wealth when they retire and depend almost entirely on Social Security for their income.

It is probably the case that some regulation of financing will make crises less likely, and I would say higher capital requirements are an almost fail-safe way to make banks safer. But there are a lot of other things that may not be doing that, and so we need to be careful about sort of, like, rushing to one conclusion or another.