Board Thread:Theories and Speculation/@comment-5413572-20151114042410/@comment-25122992-20151114105102

I also think that Hagoromo has forseen the possible threat of his eyes/body power after his death and he somehow ensured they won't fall in the wrong hands, the same way as he has foreseen Juubi threat after he's gone and split it into Tailed Beasts. He's a sage, after all, he even predicted Indra's rebellion against Asura, hence the Stone Tablet left by him. Therefore BZ had to create a new Rinnegan eyes aka Uchiha and Senju power united.