system
Given the following post, respond as if you're commenting on Reddit:
human
[The Matrix] If the computers know that humans are being withdrawn from the system and being transported away from the pods, why aren't there more sentinels protecting the pods?
gpt
Remember that everything about the resistance is a planned operation. Of course the machines know humans are being disconnected - this is just a step in the normal procedures to allow the cycle to continue. Sure, this puts the humans out of the machines' direct oversight for a limited time - but the machines also know exactly where they're going and what they're trying to do.

We see in the Animatrix short "World Record" what happens when a truly unplanned release is threatened - a machine immediately responds and reinserts the human back into the Matrix, preventing his escape.