> Heck, even doors: the moment you have to put signs that say "push" and "pull" on a door you know it's a terrible design. As we get more and more doors whose

> Heck, even doors: the moment you have to put signs that say "push" and "pull" on a door you know it's a terrible design. As we get more and more doors whose design directly contradicts the action required to open the door, at some point the most robust design needs to include the “push” or “pull” sign because people know that nothing else about the door’s design is a reliable indication of the required action.