Last Sunday, Kavin and his Dad went to visit an Electronic goods shop called "Chroma" nearby to check out some item. In this shop, there are two floors and to go up there is an escalator. It's a motion sensitive escalator and if there is no activity, it will stop by itself. So Kavin's Dad asked him why the escalator stops after some time, he thought and said-"To save electricity!"
Gosh, we were amazed!