“If builders built buildings the way programmers write programs, then the first woodpecker that came along would destroy civilization.”
~ Gerald Wienberg

It’s kinda sad that the more well learned you are in engineering, the more you realize how many things out there are designed in such a fragile matter that we’re almost all at the brink of destruction.  It is the grace of God that all the computer operated machines all work correctly most of the time (although once in a while a plane does crash and a sattelite does explode).