On the subject of IGNORANCE:
the term IGNORANT can take on all sorts of different meanings. In one sense it can mean simply uninformed or uneducated. Many fall into that category through no fault of their own. In todays increasing niche world, many people can be extremely informed or educated about one subject but woefully ignorant about so many more. One can be highly educated and specialize in one area of knowledge or occupation and still be a blithering idiot on so many other topics or subjects.
There is another type of ignorance - not because one was not educated or not informed or is simply into other things. That is a willful ignorance - a deliberate ignorance - an ignorance of choice. We live in times where beliefs have superseded fact for far to many people. They allow a belief system to override fact and objective data. The result is a type of ignorance which produces a blindness in the holder to anything but what is contained in their small universe.
One indeed could be extremely educated and very well informed and still suffer from that type of willful ignorance simply because they have opted NOT TO SEE.