This takes great care, right down to individual sentences and how they link. A speaker has to be sure that listeners know how each sentence relates logically to the preceding one, whether the relationship is similarity, contrast, elaboration, exemplification, generalization, before-and-after, cause, effect, or violated expectation. And they must know whether the point they are now pondering is a digression, a part of the main argument, an exception to the main argument, and so on.
