Long Days, Longer Nights

A hospital never goes to sleep: the robot in the pharmacy dispenses drugs 24 hours a day with nearly 100% accuracy; a chaplain dozes in the sleeping room, with a beeper; doctors work late into the night, and residents rotate overnight duty every three nights, crashing on couches in the lounge and grabbing snacks from vending machines after the cafeteria closes at 3:30 a.m.