Stupidity, as defined by Dietrich Bonhoeffer, is a moral defect and willful refusal to engage in critical thinking, and it can spread like a contagion, leading to dire consequences for society.

Questions to inspire discussion.

How does Dietrich Bonhoeffer define stupidity?
—Dietrich Bonhoeffer defines stupidity as a moral defect and willful refusal to engage in critical thinking.