Let's say you are Janet Yellen.
As chair of the Federal Reserve, you must decide next month whether to hold down — or nudge up — interest rates. This huge decision could affect virtually all Americans who borrow money, which a lot of people do during the holidays.
So you, Janet, must be sure the U.S. economy is strong enough to handle higher borrowing costs in December.
And that's why you may have broken into your happy dance on Friday after the Labor Department said job growth surged last month.