I guess brook took some time to write down the content if the square brackets even if the thoughts themselves are clear (because they have a lot of gears that do not map on to one to words). If you tried to say the square bracket parts in a spoken conversation it might not be unlikely that you’d stumble and struggle fir words and the result would in practice be worse than option two. At least I notice this problem when I try to do option one on complex topics.
I guess brook took some time to write down the content if the square brackets even if the thoughts themselves are clear (because they have a lot of gears that do not map on to one to words). If you tried to say the square bracket parts in a spoken conversation it might not be unlikely that you’d stumble and struggle fir words and the result would in practice be worse than option two. At least I notice this problem when I try to do option one on complex topics.