For your first few transcripts, it will stick out at you. After you've read a few transcripts from nervous people giving a deposition, you'll see what dithering properly looks like. You'll also begin to see that overly fluid long pieces of prose in back-and-forth discussion aren't natural - they indicate an individual has rehearsed their statement.

In this case, almost every person in that room was top-in-class quality. Not a single argument point was misstated by counsel and Judge Alsup's position was carefully crafted so as to be defensible upon appeal, while also being no-nonsense and get across the gravity of the situation to Uber counsel.