"The job advertisement might read like this: Waned -- married couple to operate a market in a neighborhood subject to arson and robbery. Hours 8 a.m. to 10 p.m., seven days a week, with no vacations. Must know various languages to serve customers of diverse ethnic backgrounds. Benefits include satisfaction of knowing you are meeting needs of immigrants, poor and elderly in neighborhood and, maybe, earn enough money to pay for children's education. Investment of $60,000 required."