This is likely simply a statistical artifact because they have no controls. It would have been very simple to add controls to the book. Include books that shou

This is likely simply a statistical artifact because they have no controls. It would have been very simple to add controls to the book. Include books that should have no arc. For example, a compilation of sonnets or non-fiction. If you dig through their data in the appendix, you'll see that they did include this but never analyzed it. And the results if you do are really bad for the paper. https://www.gutenberg.org/ebooks/38887 https://www.gutenberg.org/ebooks/38887 Why should this book have an arc? It's non-fiction. https://www.gutenberg.org/ebooks/19994 https://www.gutenberg.org/ebooks/19994 is a collection of short stories. Again they claim it has an arc. https://www.gutenberg.org/ebooks/22495 https://www.gutenberg.org/ebooks/22495 this is literally a collection of puns, that's it. Yet it has an amazing arc according to their data. How is this even remotely plausible? https://www.gutenberg.org/ebooks/1041 https://www.gutenberg.org/ebooks/1041 they claim Shakespeare's sonnets have an arc. But.. people can't even agree about the order they're in and in what way/if it's coherent. How can there be an arc? Seems very dubious.