The three participants' names begin with the first, (one of the) middle, and last letters of the alphabet. 'A' for Alan, 'M' for Mary, 'Z' for Zoey. Their placement in the room corresponds to their respective letters' arrangement in the alphabet, albeit in reverse chronological order.
The entirety of the dialogue exchange between Mary and The Professor in his office was filmed and put together as a standalone scene. This scene can be found online.
The Professor offers Mary a drink during their office conversation, which she promptly turns down foreshadowing the different path the two characters will take during the remainder of the story. The drink he offers is orange juice from a container resembling an elixir in appearance.
Filmed in 5 days.
Took one week to building the Testing Area.