Continuity mistake: The council members' signs keep changing during the "Dem Bones" sequence. "Entertainment" becomes "Anarchists" and several others switch places between cuts.
Continuity mistake: In the opening scenes, Number 6 steps onto the elevator with a beard, but arrives on the lower level clean-shaven.






Answer: It's even more obvious than you think, you know who number 1 is in the very first episode. When 2 replies to the question "who is #1?" Change the way he answers from you are number one (in the monotone or accented answer to, "You are, number 6. The comma gives you the answer. #6 is #1. It's the tone of the answer.