Board Thread:Theories and Speculation/@comment-1512913-20161105081557/@comment-27924662-20161219085436

Databooks are supposed to be part of the series right?! I mean they even had some question upon the databook in boruto's chunnin exam, my guess is that even the databook is written by some group of ninjas. Byakugan and other dojutsus are quite well known and konoha has the heritage where they protect their KKG's hence such vast info abt them is their on the contrary other kkg like Ice release(haku's clan), ketsurygan etc were hunted down by members of their village. And senjutsu was explained in detail by fukasaku. So my guess is that kishi left somethings unexplained for further fan theories and to promote naruto.