Excellent in both Kindle and Audible formats, but there was one thing in the latter that was somewhat annoying and distracting. Whenever there’s a figure, the narrator would mention the figure number and then proceed to say: “Please see figure……..in the accompanying PDF”. This cuts the flow of ideas and acts as an unnecessary annoyance. Of course, if I want to, I would refer to the figure in PDF. There is no need to cut my train of thoughts to state the obvious. Other than that, everything was excellent both as content and narration performance.