In the days of yore when I worked in the IT industry (i.e. "before" I got a life) we used to have a saying:
"To err is human, to completely foul things up takes a computer...."
But then, what do I know, as a woodworker I am one of those guys that real engineers (and CNC men) regards as being "as bright as a box of rocks" (a quote from our CNC engineer about a competitor)