It is no accident that Prudence Lucky, the luckiest girl in Luckyville, is a mere five-year-old. It is also no accident that Prudence ends up depositing a whopping $450,000 in a money-market account due to using her newly acquired allowance money to set up a lemonade stand at the local farmer's market during summer break. Unlike the rest of the people in her hometown-all of whom have bought into silly superstitions and old wives' tales, foolish traditions, and a deeply rooted bad luck mentality that keeps them locked into a bad luck syndrome-Prudence Lucky is prudent enough to understand one...