Well the idea is so cool, but lets look at it from another angle. Like what did they want to do?. They wanted to make people use the regular stairs instead of using the electric one. And if they put a sign says "please use the regular stairs" nobody would care.
So they decided to change the idea of using the electric stairs to the other one which is using the regular one. They forced them to use the regular one but without pushing or real forcing, they made them decide to use the regular one on their own. They convinced them to use it.
NOW....The point of this video is not to use the regular stairs or the or the other one. The real point is to make people change their mind without noticing.
We gotta be careful of every step we take in our life, cause every single one leads to a different way and a different future.
The cleverness is not to force people to do what do you want them to do. The cleverness is to make someone change his mind without noticing that he already did. Change the action by changing the idea of it.
Do you think every single step we take control our future?