The flight is long and depressing. I barely sleep at all, and now, after two nights of zero sleep, I am a walking zombie as I push my way through the people exiting JFK airport onto the street, hoping to find a cab. It’s still another thirty minutes or more in a car back to Manhattan, and I’m seeing double with fatigue. It’s around seven a.m., and the sky is bright with a new day and cold. You can tell there has been a recent bout of storms and snow due to how icy the air around me is, ...