The market is stable over longer periods --- government can guarantee payments wont fall below current Social Security benefits

(Wall Street Journal, “Steve Moore in the Wall Street Journal: Counter Inequality With Private Social Security Accounts,” pg online @ https://www.freedomworks.org/op-ed/steve-moore-wall-street-journal-counter-inequality-private-social-security-accounts/ //um-ef)

To be sure, the stock market is risky and highly volatile in the short term, as tens of millions of Americans discovered painfully during the Great Recession. But over periods of 40 or 50 years the market offers remarkably stable and robust real returns of 6% or more—and that’s been true since the New York Stock Exchange first opened its doors. With Own America Accounts, even stock and bond returns half as large as the historical average would leave workers with bigger retirement incomes. This means the government could guarantee that payments wouldn’t fall below the minimum Social Security benefit.