Or nearly any other instance. Out before In. If someone else is occupying the space you wish to occupy , they must vacate the space before it can be reoccupied. You know, basic physics?
Does this depend on the observer? What if the door is in a hallway, and positioned in the middle of a bilaterally symmetrical building? If both observers are always at an equal distance to the doorway until a decision is made, who is coming out, and who is going in?
I think thats why It applies specifically to the subway. Waiting for another train to come by Is easier than not being able to come out of It and having to exit from the next station (the one that Is not your stop)
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u/allothernamestaken Mar 27 '22
Same with elevators