Many of us accept, even expect, ugly fruit at the farmers market or our own gardens. Scabs on a farmers market apple remind us of its connection to nature, and nature is one reason we shop there. By contrast, in a supermarket, where the connection to tree, vine or bush is conceptually severed, we prefer our fruit clean, unblemished and uniform. That's harder to get without a lot of chemical inputs. And it's a cycle, with retailers continually upping their aesthetic standards to out-do their competitors, and consumers, in turn, increasingly trained to expect external perfection.