Do You Try To "Push" On That "Pull" Door? It's Probably Not Just You
Doors should not need a sign that tells you to "push" or "pull", they should be designed to be obvious to begin with.
In this video Joe Posner from Vox speaks to cognitive scientist Don Norman who has written several books about good and bad designs (not just doors).
Watch the video to hear his interesting thoughts on the design flaws in doors.