this means is that some of the most important elements in a talk are the little phrases that give clues to the talk’s overall structure: “Although . . .” “One recent example . . .” “On the other hand . . .” “Let’s build on that . . .” “Playing devil’s advocate for a moment . . .” “I must just tell you two stories that amplify this finding.” “As an aside . . .” “At this point you may object that . . .” “So, in summary . . .”
