1 . For humans, ignorance (无知) is inevitable (不可避免的) : It's our natural state. There's too much complexity in the world for any individual to master. Ignorance can be frustrating, but the problem is not ignorance itself.    1     .

According to David Dunning, ignorant people don't know how ignorant they are. If you give a group of people a task to do and then ask them how well they think they've done on the task. Poor performers overestimate how well they've done; strong performers often underestimate their performance: This is because those who lack skills also lack the knowledge of what skills they're missing.     2     Those who have skills know what skills they could improve on.

Our ignorance, in general, shapes our lives in ways we do not know about. Put simply, people tend to do what they know and fail to do what they don't know.     3     People fail to reach their potential simply because they are not aware of the possible.

This is a fact of life.     4     We won't miss Disneyland if we don't know it's there. For many expensive things, the less you know about them, the less you'll miss them and the happier you'll be.

    5     If we don't know about birth control, then we won't use it. If we remain ignorant about the horrors that are going on next door, we won't do what's necessary to stop them. And if we are ignorant about the dangerous things our children are getting into, disaster can follow.