My generation grew up in a country where the government used to dump shiploads of grain into the ocean. But not finishing your broccoli, in contrast, invoked mealtime lectures about hungry children in less fortunate countries. Wasting food was a moral problem and not the outcome of global inequality and skewed access that we later learned were responsible for those starving children pictured in UNESCO funding appeals on television. Aversion to wasting food is probably wired into our genes. Even so, competing with your friends to kill oranges by rolling them under the wheels of passing vehicles was not exactly a sin when you were surrounded by near-endless expanses of citrus groves, and where neighbours routinely left gift bags of oranges on the doorstep that only added to the surfeit accumulating inside.