I was reading the big book in Highschool when I was always reading and walking.

I forget the chapter I was on, but it was talking about the issue with time travel is the grammar and went on for like 2 or more paragraphs about that before moving on in the story.

I looked up to step up a curb and then back down.

And it was the time travel paragraphs again.

For a solid 5 minutes I thought Douglas Adams had just copypasted the same paragraph in 2 parts to give a "you just traveled back in time while reading" experience.

Then I realized the page had just flipped back when I looked up.