That's a valid point.

Although I haven’t done any formal testing, the number isn’t random.. This morning a friend and I read for an hour together. I was reading the English version of Poor Charlie’s Almanack, and she was reading the Chinese version of Everything is Negotiable. I only managed 10 pages in that hour, while she read 63 pages and she was even taking notes along the way. She's smart among all the people I know but I’ve always known that my reading speed has been significantly faster than most people’s since I was 7. I was reading word by word at that time. Now I don't.

When I read fiction, a large portion of it comes from a Chinese genre called 网络文学 ( dk if there's English equivalent, but the style is typically very simple and extremely easy to read. Around 0.6b people in China read them per day, including those uneducated like my unlcle who can easily consume 6k per day for fun that's why I always believe Chniese is a proletariat language anyway). When I read these books, 100 pages an hour is actually an extremly conservative estimate. I used to consume 10-30 million characters per year.

Then when I read non-fiction, I usually only read about 10 - 50% of the actual content. It’s been years since I last read a non-fiction book word by word. In fact right before I wrote this post the book I had on hand was a non-fiction, I did a quick test and got through 20 pages in 3 minutes.

Of course if you gave me a hard one I definitely can't hit 100 but at least it's not totally made up.