system
Given the following post, respond as if you're commenting on Reddit:
human
[Star Trek] How does the holodeck create such a large simulation in such a small room?

At first I thought the ground might move on a principle similar to a treadmill therefore giving the illusion of more space but their are multiple instances of numerous people using the same simulation and they are clearly further away from each other than the room would allow so how exactly would it work?
gpt
Trick of light and separate moving tiles.  Away from each other the other person is hidden behind a holographic and sound distortion making them appear further away while still standing only a few feet away from you on a separate treadmill like plate from yourself.  Making it feel like you and them can move through a whole world despite staying in place.