Social Security Cards Explained

Social Security numbers are confusing. The SSA tells you to never give your number out except to your employer and the government, but then the bank, the utility office, schools, and every store you visit want to know yours. And what do those numbers mean, anyway? CGP Grey explains social security numbers from their beginning to us in a way we can all understand, which is what he's good at. Meanwhile, Social Security is not so good at security. (via reddit)