How Do We Know?

There are two kinds of people who are ignorant—those who have never had an opportunity to learn, and those who are willfully ignorant because they refuse to get the facts. There are millions of people in the world trapped by poverty and economic stagnation, who are ignorant because they have no choice, but the latter category includes some who have Ph.D.s and advanced degrees by the handful. Those who refuse the truth purposefully, are not only ignorant, they are to be pitied.