Many escalators are unnecessary- but have you ever tried to carry a 50 pound suitcase up a flight of stairs in a crowded JR (Japan Rail) station at rush hour- this JR station is empty in this photo, but I assure you it will come in handy, especially in a nation where many people travel by train, including the elderly and less agile, with bags. Maybe- "it depends on the circumstance", or "with a sensor to detect when people attempt to use it" - and definitely, before you scold, understand the motive.
I love all but aamir khan is best .
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