I read that the the architect for a CIA* building asked how many people would work there, for the heating and cooling requirements. The CIA wouldn't say.
They guessed, guessed wrong, rooms were too hot or too cold. A retrofitted system of thermostats in each room made the problems worse.
They said don't touch the thermostats, and put them in locked plastic boxes.
That kind of lock didn't stop people fiddling with them. This was the CIA, after all.
* Central Intelligence Agency