> the number of elevators needed to properly serve the building starts increasing dramatically, eating up valuable floor space. I assume that assumes that eve

> the number of elevators needed to properly serve the building starts increasing dramatically, eating up valuable floor space. I assume that assumes that every time I take the elevator I am going take the trip to the ground floor to exit the building. But work and stores and cinemas could be on floor 40 of an 80-story building meaning the average distance traveled in elevator would be shorter than if I need to get out to the street every time.