“Escalator inside. escalator is very important. escalators, running to the aid of the elderly. There are a lot of stairs at airports. people are always lazy. Tourists do not like being on the top floor staircase. people use elevators or escalators. ladder allows for ease of transport. office employees, use the elevator to get things done quickly. business people, does not like to walk. There are escalators in luxury buildings. people take the escalator to the subway. the elderly, does not like to climb. A designer has done the design of the stairs.