This is a Sunday feature looking back at selected articles from the early days of this blog before readership had ramped up. Enjoy. Some financial decisions, particularly about insurance, must take into account what is called the utility of money to get the right answer. Normally the concept of utility is explained in very mathematical terms, but it doesn’t have to be. Let’s take a fun example straight from a game show. You’re standing beside Howie Mandel playing a super-sized version of Deal or No Deal. You’re down to just two amounts left, 1 cent and $3,000,000! You get the following offer: take $1,000,000 now, or take a 50/50 chance at the $3,000,000. What should you do? If you got to do this many times, then on average, taking the chance you would win half the time and get an average return of $1,500,000. This is more than the million dollars you were offered, and so you should take the chance, right? Not so fast. Most people would correctly figure out that they should just...