You walk down the street, peering into the windows of every house you pass in search of a properly equipped kitchen. Before long, you find one in a house that at first glance is like the others--no cars and no signs of inhabitants. However, from the window you see a number of cardboard boxes on the floor, some of which are opened but most are not. One of these boxes is unmistakably a box for a brand-new microwave, and indeed, on the counter it lay. Its slick surfaces, still covered in the protective plastic film, catch the moonlight as you peer at it.