I find the different ways that boys and girls act to be interesting. Before 5 years old, boys and girls are not supposed to really understand their differences. Anyone who is a parent knows that is crap and the boys and girls are different right from the start.
I was recently the volunteer at K's Kindergarten class. It was library day, so everyone had to line up and walk to the library behind the teacher. I followed behind to prevent any escapes. One of the rules is that the kids have to walk with their hands behind their back. I think this is to prevent them from pushing, poking or hitting each other as they walk down the hall. It is quite a ways from their classroom to the library and due to their short attention spans, the line ends up snaking all through the school. The teacher cannot watch them all. You wouldn't think 15 five year old kids would need 75 yards of space, but they do.
Just before we leave the class they are reminded that they are to walk with their hands behind their backs. We start to walk and I decide to take a little poll to see how many are following directions. There are nine girls and six boys in the class. Eight of nine girls have their hands behind their backs. Not one boy has his hands behind his back. While the girls are clustered together and following close behind each other, the boys are all over the place, swinging their arms, looking around, goofing off and causing the line to take up so much real estate.
Boys and girls are not the same and no amount of nurture will make it so.