
Continuity mistake: Whilst Wheeler is explaining the rules of inversion to the Protagonist shortly before he goes outside, as she is saying "Gravity will feel normal but appear reversed for the world around you", she is shown holding a small tank of oxygen in her left hand and begins attaching it to a tube shown in her right hand. The camera then changes angles and the oxygen tank is now in her right hand and the tube is suddenly attached to the tank. (01:30:02)