system
Given the following post, respond as if you're commenting on Reddit:
human
[The Matrix] In the beginning when the cops are about to arrest Trinity, why didn't the agents just possess the cops already in the room?

Instead of just sauntering up there giving her time to escape.
gpt
The Matrix is a delicately balanced system, it pays to have a light touch.  
Basically, the potential fallout from possessing the cops in the room has a greater risk of causing damage to the Matrix than the risk of Trinity's escaping does.  
In thinking about this risk/reward calculation it also bears mentioning that Trinity and the rest of that particular crew of free humans are currently involved in instantiating the current iteration of The One, which is a critical function of the Matrix.  Best if rank and file Agents don't muck about with that too much.