The CES Letter claims that the Church hid data concerning the nature of Joseph Smith's translation of the Book of Mormon.
Jeremy Runnells, CES Letter: My Search for Answers to my Mormon Doubts, self-published online, 2017
Unlike the story I've been taught in Sunday School, Priesthood, General Conferences, Seminary, EFY, Ensigns, Church history tour, Missionary Training Center, and BYU... Joseph Smith used a rock in a hat for translating the Book of Mormon.
In other words, Joseph used the same magic device or “Ouija Board” that he used during his treasure hunting days. He put a rock – called a “peep stone” – in his hat and put his face in the hat to tell his customers the location of buried treasure on their property. He also used this same method for translating the Book of Mormon, while the gold plates were covered, placed in another room, or even buried in the woods. The gold plates were not used for the Book of Mormon we have today.