What is something a naive person would not understand?

A naive person lacks wisdom, experience, and tends to think they are indestructible. I would say a naive person would not understand the need for safety procedures. Because of their lack of experience, they don't understand why it is necessary to take precautions before doing certain things. They have a tendency to jump into things quickly, and act on impulse. They have little to no discernment, and take everything at face value. They don't understand the need to take things slow, or why we have to be cautious, because they haven't yet been hurt by someone, or something. They don't understand the kind of evil that exists in the world, because they have never stood face to face with it. 

There flaw is their dicks