He forgot the part about how when it finally starts working again it will use up the rest of its unicorn blood by printing all the stuff you told it to print by hitting the Quick Print shortcut 500 times in frustration.
Of course these days it's a little bit easier to cancel it. I remember when it was almost impossible to stop it from doing this before it was finished. And the phone calls from family members insisting their printer had gone insane printing twenty copies of things they told it to print four days ago.