I've figured out myself and talked to others, and holy stuff it made sense, unlike all those contradicting researches.
Seeing you're asking someone to simply "solve it" reveals how much you actually know about this kind of stuff.
Biologists had figured out for themselves, referring to other biologists, and, holy stuff, it made sense, unliking the contradicting views of arrogant children.
You obviously have trouble reading. I never referred to solving it as being simple, I only asked that he/she refrain from telling individuals his/her gender, when he/she doesn't quite understand it her/himself.