The document discusses different definitions of open-mindedness that the author has heard. The author disagrees with definitions that refer to being open to new experiences or giving things you dislike a chance. The author argues these definitions are too vague and could include unpleasant or dangerous activities. Instead, the author proposes that open-mindedness means keeping an open mind to new ideas and concepts while still knowing your own views and tastes, and being willing to consider you may be wrong about some things.