Good observation. Also there is some funny stuff with what the book say referenced appendices do and what those actually explain

At the end of chapter 30 we have:

   Next: Appendix A — OCaml Setup and Tooling

But the after the chapter 30, follows the chapter 31, and Appendix A is called

    Appendix A: Ocaml Quick Reference

And the link is a dead link.

Thanks for the link, the summary structure was the same as a handbook on quantitative finance that i had read briefly in the past and it confirmed the impression i got whilst consulting that website.

I wonder if the prompt was: “write a quantitative finance with ocaml book. Make no mistakes”