Facets

The scenes involving Sisko as Joran had to be shot twice because the producers were unhappy with the first set of dailies. The reason for this was they felt that Avery Brooks' performance was too creepy. According to visual effects supervisor Gary Hutzel, Brooks spoke in an almost inaudible whisper. However, Brooks' second take used in the episode, while more audible, was still very creepy.

When Chief O'Brien is briefing Nog on the Starfleet Academy entrance exam in the Holosuite, he holds a PADD that clearly says "GO AWAY" on it. This is the same prop as used in the opening scene of Explorers (1995), given by Bashir to Jadzia to quietly tell her to leave. In the context of O'Brien and Nog of course, the text makes no sense and was certainly intended to be illegible on screen.

References Star Trek: The Corbomite Maneuver (1966)