My house has a radio in the shower, permanently tuned to National Public Radio, so most days begin with a splash of news. Saturdays, however, start with Car Talk, and today's episode began with the bold and not-car-related proclamation that Americans lifespans are shortened by the fact that we don't linger in coffee shops. By this crude and uninformed measure, I am likely destined for immortality; for the past six months, I have drifted in and out of neighborhood coffee houses with absurd regularity, often occupying a table for an entire day.