People will also believe that they understand something when they don’t really understand it. Have you ever left a meeting where everyone seemed to be in agreement, yet their later actions made it clear that they didn’t agree after all? It’s common to see nodding heads in a room when people don’t agree – they think they agree but in reality they don’t. This is because when an explanation is sufficiently vague, people are free to believe what they want to believe. Politicians often use this rhetorical principle to great effect. Words like “freedom, justice and fairness” mean different things to different people. Vague explanations are common in business, and they can give the illusion of agreement. But they don’t get results.