EXPERIENCED KNOWLEDGE. To give an opinion. Suggest. Preach. It is not valid to have the Bible. The encyclopedia in the hand. True wisdom drag experienced knowledge. Acquired from our respected ancestors. Transfer them to our children good habits. Face problems with liability. Humility when we were wrong, and admit it. Not always for being an adult is right. Listening. Give advice when we called. Speak without knowledge of the facts. It is preaching in the desert of ATACAMA in CHILE.