The reason I'd like part 1 (tell them what you're going to tell them) is it helps me answer the question, "Is this relevant and interesting enough to me to spen

The reason I'd like part 1 (tell them what you're going to tell them) is it helps me answer the question, "Is this relevant and interesting enough to me to spend the time reading it?" In a sense, I need part 1 because I'm not a captive audience. If this were (say) a lecture in a college class, then it's a foregone conclusion that I'm using the time, so I might as well pay attention. But since it's a web article, I have the choice to keep reading or close the browser tab. I'd prefer to be able to make an informed choice.