Ever notice how many people don’t know how to go through a door? They don’t know how to hold it for other people, and, when the door is held for them, they just keep on walking without even mumbling their thanks. How rude! To rectify this situation, designer Isadora Dantas has created this helpful flowchart that instructs users in the proper way to pass through a door. If this graphic was distributed along with building access badges, the world would be a better place.