I used to use this (still do really) as a technique when starting undergraduate lectures. They’re there, ready to listen, but chatting away and need a moment to focus their attention. *SO* let me tell you further fun facts about carbonyl chemistry… Works. Those Anglo-Saxons knew what they were about.
I had a history professor who would often use a similar preamble phrase. His was "And SO IT IS that we see that..." It worked to get our attention partly because of the time it took to say all that, and partly because it was so idiosyncratic that it sorta became a running joke. I remember one session in particular. This was a summer class, and as such each class session was around 2 hours long. The professor would ty…
Optimal play from the professor.