The title of this section is "Speaking is Writing." While much of the course will deal with the writing process you're familiar with - the part with pens, paper, and keyboard - one of the most important ideas in this course is that there's much more to writing than just what gets written down.
Writing isn't just ink any more.
Speaking is writing - conversations, presentations, even memos to self.
Text messages are writing.
Chat messages are writing.
Tweets are writing.
Emails are writing.
It's all writing.
If all of that is writing, then there's no blank page, and you've already started writing even before you "sit down to write."
This section is all about noticing, cementing, and enjoying that revelation.
What's next?