User blog comment:ACursedDoor/Ideas about Eye of Providence and about who wrote the books./@comment-76.107.232.216-20120907020944

It might be possible that the writer of the book is Stan. And the Eye of Providence is probably a fake Illuminati group, like Myevyn said, and Stan might be meeting them behind the vending machine while they enter the secret room through secret passageways. It might also be possible that the writer is a member of the Illuminati group if there is one. The Eye of Providence appears alot on the show, so each Eye that appears might have a hidden camera or magical seeing ability that the possible Illuminat group might use to watch over Gravity Falls to make sure everything is alright.