I think I will not be mistaken if I say that many of us love Michael Jackson. Someone grew up under him, someone raised his children under him, someone heard him much later than his peak of popularity, but nevertheless, the majority listened and heard him.
So, it turns out, Michael was not only a brilliant singer and dancer, but also a little engineer and inventor. Up to the point that patented one of his invention.
Remember his song “Bad”? Or rather, the clip and dance in it. If someone does not remember, I remind you: ')
Pay attention to 20 seconds:
Antigravity? Everything is easier. The heels of the stage shoes were hollow, and a V-shaped plate was attached to them from below. On the stage itself, in certain places there were T-shaped “hemp”, for which the dancers clung. After the tilt, it was worth taking just one step of the lunar path and no one noticed the moment of "undocking."