I bought a Chipmunk for my son. My late father, chief engineer over 150 engineers and draftsmen and a gun designer came down on my ass. "That gun has a firing pin galling the bolt. It was designed by an amateur. Take it back"
My wife took it back.
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. -Ernest Hemingway The man who makes no mistakes does not usually make anything.-- Edward John Phelps
