In a bright hospital office a bespectacled doctor in a white coat and surgical cap holds forth across his desk to three young men in patient gowns, who slouch in their chairs swigging from a bottle while bandaged stone blocks sit on the floor at their feet; one of them holds up a fist-sized rock strapped in a white bandage in disbelief. The sketch ends outside the building, where a man in a dark blue shirt peers up at the window and raises a metal pan lid over his head, and a bandaged stone lands on the concrete ledge below.