This door is just opposite the door to my office.
As I’m located at the end of a corridor I see a lot of people coming and going during the day, and most of them pass through this door to head out into the atrium and take the stairs or the elevator or exit the building. And about 70% of the people who pass through this door leave it open once they’ve gone through. This not only lets in cold air from the atrium, but also distracting noise of one kind or another from outside.
See, I’ve had to interrupt drafting this post three times already to get up and close the door again.
But I can understand people’s confusion in this situation. If only there were some kind of large, simple, visible reminder of the necessity to keep the door closed, then everyone would know what to do and we’d all be happy.