Continuity mistake: In the previous episode 'Back to the Garden', Helen asks Joan what she can remember from the night of Kevin's accident and Joan says she was watching The Nutty Professor when she heard her mom scream. In this episode, in one of the flashbacks Joan and Luke are watching The Three Stooges when Helen screams.
Continuity mistake: When the motor is launched towards Friedman and Glynis at the end of the episode, Friedman dives out of the way, but between shots, his position changes a lot. In the long shot you can see that he dives clear of it, but when Ms. Lischaek knocks into Glynis, Friedman is only just jumping out of the way and is still in shot.
Continuity mistake: When Adam gets angry at Joan in the art room because of the camera, his half-made sculpture is sitting on the desk. When he grabs his bag toward the end of the scene, he accidentally knocks it over, unbalancing it. But in the next shot it's balanced again, then suddenly it's unbalanced. This happens several times between shots, and can even be seen in one shot before he knocks it over.