[graemep]

You would have to be pretty badly informed not to know those two examples though.

Maybe a lot of people are, but they really do have to not want to learn.

[contingencies]

I don't pretend to understand the world and especially other people but this quote seems apt when trying.

To be ignorant of one's ignorance is the malady of the ignorant. - Amos Bronson Alcott, 1871