Is the index what separates fact from fiction?

Is the index what separates fact from fiction? A lookup for all the different words and terms, and where to find them in a book.

What is the definition of an index?

See index cards, footnotes.

I haven’t yet read Index, A History of the. By Dennis Duncan, but I’m looking forward to it.

See also

https://www.theguardian.com/books/2021/sep/07/index-a-history-of-the-by-dennis-duncan-review-scholarly-anarchy

https://www.nytimes.com/2022/02/09/books/review-index-history-of-dennis-duncan.html

#review