I have seen it start on a sentence, get lost and finish it with something like "Scratch that, actually it's fine."

And if it's not giving me a reason I can understand for a bug, I'm not listening to it! Mostly it is showing me I've mixed up two parameters, forgotten to initialise something, or referenced a variable from a thread that I shouldn't have.

The immediate feedback means the bug usually gets a better-quality fix than it would if I had got fatigued hunting it down! So variables get renamed to make sure I can't get them mixed up, a function gets broken out. It puts me in the mind of "well make sure this idiot can't make that mistake again!"