Question: Posting this as a question, rather than a mistake, as there may be a logical explanation. After Captain Picard, Barklay, and Data become tracked in the simulation of the Enterprise, several times we see them separate to different parts of the ship (Data going to Engineering while Captain Picard remains on the bridge, etc.) Since they are physically in the holodeck, close to each other, they're being tricked by the holodeck. Why, then, when Data throws his comm badge toward the warp core (to prove they're in the holodeck) does the holodeck not continue "tricking" them? If the simulation can cope with two people visibly walking further apart than the actual room, why wouldn't it use similar techniques to make it appear Data's badge just landed where he threw it?
Question: How is Moriarty's simulation able to fool Data? Throughout the show Data is shown to have vastly superior senses to humans. Additionally, spatial tricks and forced perspective would be ineffective on him since he doesn't see the same way humans see. In another episode, Data is able to discern the incredibly slow movement of an object caught in time. It seems unlikely he would be unable to tell his surroundings were computer generated.