[quote=@Scarifar]
I wonder... 

Is it safe to say that there are humans who do not know how to Wi? 
[/quote]

Not sure if pun
[img]http://meatified.com/wp-content/uploads/2013/10/futurama-fry-not-sure-if.jpg[/img]
Or serious question

In case it is serious, I would say probably not. If you have some kind of plot line you want to develop, feel free to create a village or so which is cut-off from all other human villages and so didn't receive the knowledge about magic.