An engineer, a physicist, and a mathematician are staying at a hotel.
The engineer wakes up and smells smoke. He goes out into the hallway and sees a fire, so he fills a trashcan from his room with water and douses the fire. He goes back to bed. Later, the physicist wakes up and smells smoke. He opens his door and sees a fire in the hall, for it has reignited. He finds a fire hose, and, after calculating velocity, distance, water pressure, trajectory, etc., he extinguishes the fire with the min…