A group of engineering professors were invited to fly in a plane. Right after they were comfortably seated, they were informed the plane was built by their students.
All but one got off their seats and headed frantically to the exits in maniacal panic.
The one lone professor that stayed sitting calmly in his seat was asked: “Why did you stay put?”
“I have plenty of confidence in my students. Knowing them, I can assure you this plane will never even start.”