A Ponzi scheme “is a fraud intended to mislead investors,” said Christina C. Benson, an Elon University associate professor of business law. “Social Security is a legally mandated system that has been in place since the 1930s to serve as a critically important social safety net that allows working Americans to save towards retirement.”

Billionaire businessman and White House adviser Elon Musk said, “Social Security is the biggest Ponzi scheme of all time.” That has been a popular

Elon Musk's recent after-hours all-hands at Tesla shows he can often ask more of workers than other CEOs. Yet there might also be limits.