Dear Undercover Economist B

　　Are there tangible benefits in flossing? Is it wrong to fakeorgasms? What does the perfect online dating ad look like? Shouldwe bother doing the ironing? Is it really impossible to buy theperfect Christmas gift? (Other than this book, of course.)Economists might not be the first people you would think of to giveyou advice on such diverse areas as parenting, the intricacies ofetiquette or the dark arts of seduction. But for years bestsellingauthor Tim Harford has been doing just that: answering the mostchallenging questions in his brilliant column, where he uses thetools of economics to give practical advice about everydaydilemmas, conundrums and concerns. From family rows and the stockmarket to buying socks or speed dating, you'll find within thesepages a witty - and of course rational - explanation for almosteverything you ever wanted to know about life.