Did the video pique your curiosity? For know that "the first step to learning is to be curious"
Despite being just a joke, it takes a lot of knowledge about electricity, magnetism and electronics to make the trick possible. I'm sure a lot of people wanted to know if what was done in the video is really possible.
If these people questioned a science or physics teacher or a professional in the field of electronics or electricity, they would be enlightened about this physical impossibility.