Teaching

The best form of learning is to experience something for yourself. Similarly, trying to convince someone of the truth usually is a difficult task because their previous misconceptions get in the way. Often they won't end up accepting the knowledge you have presented to them in the end, instead they will keep their own and brush your's off as false. With these type of people, it's necessary to let them experience things for themselves, so that eventually they'll realize the truth in your words.