Under the Social Security retirement system, the federal government collects a tax on most people's wage income and makes payments to retired workers above a certain age who are covered by the system. (The age to receive full Social Security retirement benefits varies based on the year the worker was born.) The Social Security retirement system is sometimes referred to as a program of social insurance. Is Social Security an insurance program in the same sense as a health insurance policy that a company provides to its workers? Briefly explain.