I count myself as guilty as the next guy when it comes to ignoring the details of my literary ancestors’ lives, but in my romantic, sepia-toned fantasies of the past, all writers had to do was string lovely sentences together. Then again, when I consider the ones with staying power, most of them had something that would please a publicist. Hemingway was impossibly masculine, rugged, and outdoorsy; London photographed like a sad-eyed movie star; and Sylvia Plath was out of her mind. I’m mildly cheered by the idea that all Dorothy Parker and her cohorts had to do was drink