It is fashionable these days to decry “food miles.” The longer food has spent traveling to your plate, the more oil has been burnt and the more peace has been shattered along the way. But why single out food? Should we not protest against T-shirt miles, too, and laptop miles? After all, fruits and vegetables account for more than 20 percent of all exports from poor countries, whereas most laptops come from rich countries, so singling out food imports for special discrimination…