A great way to create a message that people not only listen to but actually remember is to include what the behavioral economist George Lowenstein calls “information gaps.” We’ll learn what those are this week. We’ll also meet a scientist who does something remarkable: makes talking about the life of grass really interesting.

Those of you who have taken the companion series Good with Words: Writing and Editing may remember the following advice: “Trying to sound smart is a pretty dumb strategy.” We’ll learn this week that it also applies to speaking and presenting. Don’t try to impress your audience. Don’t set out to wow them with your intellect. Focus instead on being helpful. Treat your words like they are a gift you really want to share.

Congratulations! You’ve made it to the fourth and final week of Course 3. We’re going to start by looking at the difference between a high-considerateness speaking style and a high-involvement one. But we’ll also make time for some surprising findings about what you can do to make your next commute a little more pleasant and stimulating--not just for you but also for a complete stranger.