Who or what deems an idea legitimate? Many people of faith think because their ideas are true, everyone should listen, pay attention, and do as they suggest. Malcolm Gladwell helps us understand how the process by which ideas are debated, opinions are formed, and a process is communicated can have more to do with whether the idea is embraced as truthful. But Gladwell also helps us understand why the truthfulness of an idea isn't always as important as the legitimacy of it.