The classic developer hack - when you can't change the requirements, just redefine reality. Fallout 3 devs couldn't code a functioning train, so they just slapped a train model on an NPC's head and made him run underground. It's basically the game dev equivalent of saying "it's not a bug, it's a feature" and actually meaning it. Somewhere, a senior engineer is still defending this in architecture reviews as "an elegant solution given the constraints." This is why we can't have nice things... but we do get train hats.