system
Given the following post, respond as if you're commenting on Reddit:
human
[Star Trek TNG] In "Elementary, Dear Data", if the holodeck has a finite amount of space, how does Moriarty get Pulaski at so far a distance (several hundred feet, perhaps even several hundred yards) from Data and Geordi that they just couldn't find her?
gpt
Distance is a flexible concept in the holodeck. If you divide the holodeck in two with a wall and paint that wall to resemble as much space as you need, you could hide anything behind that wall as "far away" as you need it to be.

Likewise, if two people were to walk in opposite directions, you only need to keep the participants walking in place and project an image to one person of the other moving further away (and vice versa) to complete the illusion.