The average attention span of an adult is eight seconds—eight seconds!That is tough news for a presenter. It means you may have a room full of people, but their minds are elsewhere. You’re competing with a slew of activities demanding their attention—email, texts, Facebook, YouTube, chats, and apps, in addition to thoughts about their next meeting and projects that are behind schedule.How do you get a message across in a world like that?The inability to powerfully...