Visible crew/equipment: When Dr. Mike tells Jake that he's not ready to go home, a black chalk T-mark is visible on the floor near the door. Then as Jake pounds on the door he tells her he has a business to run, and the moving boom pole casts a shadow on the wall, at the top, right side of the screen. (00:26:35)
Visible crew/equipment: Shadow from the boom is visible above Sully when he's talking with Michaela about Jake's condition. (00:27:26)
Continuity mistake: Matthew invited Ingrid to eat with them in the previous episode. In this episode, he acts like he's meeting her for the first time.
Answer: A Cooper was someone who made various things out of wood including wooden caskets and even barrels.