I learned today that in South Korea the number thirteen is not considered unlucky. Elevator buttons do not jump mysteriously from twelve to fourteen, because thirteen is just another number.
On the other hand, hospitals in South Korea do not have a fourth floor. Apparently, the number is four is associated with death. Not really where you want to be in a hospital.
So I assume that hospital evevator buttons jump from three to five. Which presumably solves the problem.
Except I wonder whether the people on the “fifth” floor of the hospital are just a little nervous.