I've just finished an anthology written by folks who work in higher education. I've noticed an ubiquitous and peculiar stylistic fillip that didn't appear in my textbooks when I was in college.
It appears most often as the bridging sentence between paragraphs, in the form:
[Things concluded & proven] comma then comma [introduce this new concept/approach/fact]
Where did this come from? Does this "comma then comma" replace an earlier rhetorical move I didn't notice?
How can I make it go away?