A small, but growing, revolution is occurring in the way that engineers and scientists design their presentations. This revolution advocates the assertion-evidence approach, in which the speaker builds the talk upon messages, not topics. In addition, the speaker supports those messages with visual evidence, not by bulleted lists. Our research has found that the assertion-evidence approach leads to talks that are more focused and better understood. In addition, many of our students and workshop participants claim that using this approach gives them more confidence.