First, all men are not the same in any way.
Ender, however, is not your typical sci-fi book. They want to 'pile 'em high promote 'em fast' (though probably not cheap!). That's enough to get started as well as you a feel for who they are. Pleasure are enchanted by brand new strain world as Mr. http://speed.Phorum.pl/viewtopic.php?f=3&t=415859