text: A group of professors of Engineering were called on a mission and were sitting in a plane, ready for departure.
  When the doors closed and the plane was about to take off, the professors were informed that the plane they were sitting in was built by their students.
  All professors immediately rushed toward the exit doors, trying to escape.
  Except for one who remained seated, calmly reading the news.
  A colleague asked him why he was not escaping the plane.
  “Relax, they are our students!”
  “Are you sure you taught them everything well enough?”
  “Calm down! I’m sure it won’t even take off…”