Well, I guess you are right. I doubt the speed would be consistent over 10 hours but I can easily imagine a bored teenager could sleep 7-8 hours and read most o

Well, I guess you are right. I doubt the speed would be consistent over 10 hours but I can easily imagine a bored teenager could sleep 7-8 hours and read most of the rest of the time. So the number drops from maybe about 500 words per minute to something less than that. And that still allows some great comprehension.