system
Given the following post, respond as if you're commenting on Reddit:
human
[General]Why is there man-sized ventilation in our place of business? We don't do smelting so nothing that needs that much air. Huge vents take up space on the floor plan and increase the cost of cooling the place. They go to every room in our place of business, seems like kind of a security risk?

I am not worried about terrorists or burglars, that is crazy.  More like co-workers stealing stuff or Fred when he is fired next Tuesday after working here for 30 years and having his pension taken.
gpt
Building codes requires them, they aren't  built for everyday airflow, but for managing smoke and manipulating the atmosphere to help in firefighting.  They help firefighters get through to blocked areas and evacuate people.

Air shafts must be big enough to a maintenance worker to crawl through or long-term money will be wasted tearing things out to fix them and putting them backing.

There ave been no complaints yet of workers going AWOL within the vent systems.