Monroe’s Motivated Sequence is not a new idea. It’s hard to pick up a basic public speaking textbook without finding an explication of it.
So why doesn’t it get used more? I suspect it’s because it isn’t new. But it still works.
For readers who are familiar with it: I want to tell you why you should give it a second look, and tell you where I see people having trouble applying it. For those who haven’t heard of it: I want to tell you about it, and help you avoid common pitfalls.