If ever I feel I might be able to tackle it, I'd love to try holding a spear or something in the theater, or opening a door, or anything, just to try it, you know, because it must be some marvelous magic thing.
The only way for errors to occur in a program is by being put there by the author. No other mechanisms are known. Programs can't acquire bugs by sitting around with other buggy programs. Right practice aims at preventing insertion of errors and, failing that, removing them before testing or any other running of the program.