By ANDREW MCGUINNESS Samuel Beckett raps hard at my house. I hear him, but can’t see through the glassy eyes of the door. A package juts half-in, half-out of the mouth of it, poking fun through the letterbox like a rascally, white-furred tongue. My wife slips a fresh pair of surgical gloves on, sprays the surface with disinfectant, wipes it …