Flying Through A Black Hole

Jiu Fang Jin blasted open the sky with a punch and said that he had a solution for the end of the world in 2012, and I believed him. Jiu Fang Jin said that everyone's brain not only has potential, but also forbidden abilities, and once developed, it can fly and teleport and do anything, and I believed him. Jiu Fang Jin also said that the creator was just a human who had developed 100% of his brain's potential, and I was doubtful. Then why can people only use 10% of their brain's capacity nowaday