you can download tex source for that pdf which at one point (idk if it still does) included the comment "WORK IN PROGRESS - DO NOT SHARE" and the commented out

you can download tex source for that pdf which at one point (idk if it still does) included the comment "WORK IN PROGRESS - DO NOT SHARE" and the commented out title "First Contact with an AGI System" which they ended up toning down for publication lol