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Escalators are a technical marvel, you're telling me you have this giant diagonally oval-shaped machine that's partway underground cause a series of metal steps to rotate nearly without end in order to bring people up/downstairs with them not having to move as much as a MUSCLE??? Atleast with elevators it's basically just a room with a few buttons in it, you press one and after waiting for a while with some charming music in some cases you're at the floor you need to be. Besides knowing that it's mechanical you don't really see all the technical stuff outside of the room itself.