There is a MASSIVE difference between reason and purpose.
You can attribute reasons to evolution but it has no purpose @Batteriesallgone gets it.
You also get it @larrygrylls, @Crumbs1 @SophoclesTheFox and other pp who stayed on topic. I respect the alternative theories but I still believe usborne is right based on my assessment of the balance of probabilities.
Evolution is nothing more than a correlation of biological stochastic processes.
I fully expect my confident intelligent dd to be able to cope with that knowledge
Dw and I are nurturing future leaders, you can do whatever you want with your dc.