There's been a multi-page discussion going on in the Justine Diamond thread that has inadvertently hijacked that thread. Probably more suitable for its own thread. Won't repeat everything, it's there if anyone wants to catch up, but looking to continue the discussion here.
I don't respect any society that denies education to children and especially when it does so as a matter of policy to girls. Whether it be the Taliban or gypsies or any other social construct, children deserve and should be allowed to get an education. There are all sorts of things to know and ideals to conform to, but denying education is not one of them.
Maybe if they were well educated then whatever you think to be "everything" they know would not be all they know? Maybe they'd know more if they had a well-rounded education.