Claiming someone is Ignorant can start a lot of completely unnecessary trouble. It’s one of those words where context is always so very important. As a self~styled grammar Nazi, I know this well.
Considering that no one, not counting God, is capable of omniscience, it’s understood that each of us is forced to deal with many things about which he can’t possibly be sufficiently Knowledgeable. That’s, if it’s handled well, a quite harmless ignorance. Invincible ignorance, the kind that can’t be helped, can be excused up to a point. It can also be eliminated, or at least mitigated.
Vincible ignorance, though, is quite a whole nother matter. That’s the kind that happens when someone recognizes that something scary has to be dealt with, and he chooses not to accept responsibility for it. He chooses to remain conveniently Unacquainted with it because it’s simply the easiest approach in the short term.
The single worst kind of ignorance is the kind one is guilty of when he can legitimately be referred to as an ignoramus.
Over the years, very many people have often pointed out to me both that I’m exceptionally knowledgeable about things no one else has the very slightest of clues about, and that I’m quite oblivious to things everyone else knows extremely well. I know absolutely everything whatsoever about 1960’s history and pop culture, especially the music, but absolutely nothing whatsoever about sports. I consider that a part of my charm.