Why do two-way openable doors have designated “PUSH/PULL” signs on the opposite sides?
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One thing you learn about people: when it comes to the simple things, they want direction, not options.
If they have a two way door, people might just push, which would be fine, but they might also freeze, since the part of their brain that is usually asleep (not judgement – that’s just how the human brain works) is brought in to decide how to interact with the door.
Plus, if you have one side for pull and one side for push, you coordinate people better. People on the pull side will keep a bit more distance from the door, and pull the door open, which prevents collisions with people on the push side, who will be more likely to square up to the door and push against it.
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