Dear Undercover Economist

Are there tangible benefits in flossing? Is it wrong to fake orgasms? What does the perfect online dating ad look like? Should we bother doing the ironing? Is it really impossible to buy the perfect Christmas gift? (Other than this book, of course.)

Economists might not be the first people you would think of to give you advice on such diverse areas as parenting, the intricacies of etiquette or the ...