Continuity mistake: Lois lands her plane in front of The Mad Scientist's lair early in the short. Her plane is adjacent to the door, which is white. Later as The Mad Scientist is running away before the place explodes, the door is now orange, Lois’ plane is now facing away from it, and the steps that were in front of the door are now much smaller. (00:04:45 - 00:09:35)