I'll try and simplify: He would ideally say A, B, C, and D. Then descend into each part, so we know where he is going. Instead, he says A, A1, A1.a, A1.b, A1.

I'll try and simplify: He would ideally say A, B, C, and D. Then descend into each part, so we know where he is going. Instead, he says A, A1, A1.a, A1.b, A1.b1, A1.b2, A1.c, A2, A3, A3.a, A3.b, A3.b1, A3.b1.i, A3.b1.ii, ... What should be a smooth narrative for a 30 minute talk about a book, becomes a series of asides, discursions, qualifiers, and more minutiae, which, while technically accurate, make it hard to stay engaged as a listener. Of course, I'm only a "YouTube listener". The average person physically in the audience that day might have substantially higher levels of commitment and focus on parsing his narrative.