Ha! I saw that this morning too and asked myself the same questions
I believe because of our experience with gimmicked tubes, boxes, magnets and shells, a demonstration would probably reveal to us how it worked
![Wink ;)](./images/smilies/icon_e_wink.gif)
The description is always fascinating, but once you get it in your hands ... most of us know the feeling
![Laughing :lol:](./images/smilies/icon_lol.gif)
This one will probably not be examinable afterwards by the looks of it.
Magic Wagon should make a version of it - it seems to be right op their alley!