On a smaller scale...
A friend of mine was once working on a PDP-11 machine, typing in a lot of code using TECO.
Someone else in the office came over and started playing with the front switches on the PDP-11. For no reason, you understand - he was just fiddling for the sake of it. It probably wasn't going to do any harm, but not unreasonably my mate asked him to stop playing with the switches in case something went wrong. "Oh, look, it won't do any harm", says the other guy, "but if it makes you happy, I'll turn the keyswitch to lock so that the keys CAN'T do anything."
So he reached for the keyswitch, and turned it the wrong way - which switched off the PDP-11....
Biting the hand that feeds IT
