Why So Many Books?
A line of characters is diameter of a circle.
Six hundred titles on Amazon tell the same story: everything’s a circle.
Scroll through the titles and view the covers (Circular Theory Ilexa Yardley). You are processing strings of characters anchored by a photo (definition for the internet) (definition for reality) (repetition, duplication, reproduction) (educating yourself about the circular theory) (validating the circular theory).
You are not doing the processing (there is a hidden circle between process and processor) (noun and verb) (circle as a noun and circle as a verb).
That covers everything.