The authors had studied the subject, in case you wanted to know. Anyway, I believe that it is morally wrong to seriously read into this because it creates division out of something which is just, as I said, generalisation. 99%? Don't be ridiculous, that's entirely unrelated. This research finds common trends within women and men and compiles them. For example, it says that boys mostly enjoy sports more than girls because it's a modern equivalent of the daily hunting for food in humanity's early days, a practise inscribed in their brains. In theory, that's true. In practise, it's BS. Almost all the girls I know love playing sports, and play football (not American) whenever they get the chance. I almost don't play sports at all, and I have friends who do the same thing. All the people I know, intimately or not, are diverse and different, there is no one who acts exactly like this study suggests. I sincerely doubt that 99% of men play sports, don't listen when people talk, act macho and alpha male, and prefer crisps to chocolate. This "research" is being treated more and more seriously, when it is essentially, a scientific joke. These brain trends are not in every girl, or every boy. And with people believing like this stuff is entirely true, the "perfect" future society might be developed with gender elite jobs. The more "research" that we get, the more people become interested, the more likely it seems to me that a divisive society like that could exist.