Imperfect markets are different. (...) Similarly, in Paul Krugman's neat adaptation, "all perfect markets are perfect in the same way: all imperfect markets imperfect in their own different way.” But truly perfect markets exist only in economists' models; in the real world, markets are imperfect. But within imperfect markets there is a range from those that work well enough for a laissez-faire approach to be broadly valid to those for which market failure or imperfection is extreme and inherent. The market for restaurants works pretty well. The best way to ensure a range of restaurants that provide us with variety, incentives for good service, and enjoyment of changing ambience and menu is to let entrepreneurship do its business-let thousands of flowers bloom, some to succeed and some to wilt.