Science and Hiro

how about if you can come back to your past?
like him

he is Hiro Nakamura from character of Drama Serial tv (science fiction) HEROES.
Hiro is an evolved human who had the ability to bend space and time. After discovering that he was dying, Hiro attempted to use his power to fix all the wrongs in his life by using his ability.

My metaphor.

all right, this time i'll tell you some reason from me about
"Girl" why? because i'm in confuse of that word.
first, we are come into the world with two gender, Male and Female. yeah i heard if girl is made from boy's rib. absolutely amazing right? but, why girl is not made from boy's heart(?)
in my mind, girl is the cruelest and the kindest. they come into this world with a sharp stiletto and jabbed to boy's mind with a lot of affection and love, they are will be a mother for their children, and they are someone who bring us to the world now.