Picture a room full of teenagers being told that they can be anything they want to be. The speaker is passionate. The words are true. The encouragement is genuine. And at the end, the teenagers clap and file out, and within forty-eight hours, most of them feel exactly the same about themselves as they did before. This is not because the message was wrong. It is because principles alone do not change what people believe about themselves. Tell someone they can be a doctor and they will nod. Show them someone from their street who became a doctor and something different happens. The information is the same. But the experience of receiving it is completely different, because one is a statement about the world and the other is evidence about their world. Principles ask people to believe. Examples ask people to notice something that is already true. Principles live in the abstract. Examples live in the concrete. And humans, for reasons deep in how our minds work, are far more changed by the concrete than by the abstract. This is not a failure of intelligence. It is a feature of how we actually learn. The brain is not a logic machine that updates beliefs when given correct information. It is a pattern-recognition system that updates beliefs when it sees patterns in real things that happened to real people. Examples are evidence. Principles are claims. And evidence is almost always more persuasive.