Ultimately I am you, and you are I. In one we came, and in one we shall return.
? My understanding of the navel is a chakra point of infinite energy. There is a reason every anime, super being, or portrayal of energy has the character focusing their hands near their navel. Think about it.
The outcast genres of music (metal is becoming mainstream, I'm aware of this)
Philosophical studies
Quantum Physics
Fantasy