As a part of the post-publication peer review. readers can send comment letters to a journal on the articles it has published. Such letters critically comment on the content of the related article. They allow the readers to see the messages of the article in the context of the criticisms. https://www.roneverhart.com/Traditional-Karate-Do-Okinawa-Goju-Ryu-Book-1-The-Fundamental-Techniques-by-Morio-Higaonna-Preowned/