คลายเครียดหลังสอบเสร็จด้วยขำขันกันหน่อย(แปลเอาเองนะ)
Three employees of NOSC (an engineer, a physicist and a mathematician) are
staying in a hotel while attending a technical seminar. 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 hallway. He walks down the hall to a fire hose and
after calculating the flame velocity, distance, water pressure, trajectory,
etc. extinguishes the fire with the minimum amount of water and energy
needed. Later, the mathematician wakes up and smells smoke. He goes to the
hall, sees the fire and then the fire hose. He thinks for a moment and then
exclaims, "Ah, a solution exists!" and then goes back to bed