I'll be lying if I say I understand everything he said here, but the little I got really hit home. Can I say Google would rank articles and sites that are intensively written for readers?
In simpler words, Google expects that sites and articles appear like they are before their readers and are answering them in-toto, something like a patient before a therapist.
So sites should focus more on answering every question a reader might ask. These questions could be answered in a post or in different posts but should have an apparent map and connection or path the spiders can follow.