Board Thread:Naruto Discussions/@comment-25213123-20140925121336/@comment-1512913-20140929191221

Sharingan is to Rinnegan what Homo neanderthalensis was to Homo Sapiens, not part of same evolution but an offshot. Mangekyou Sharingan is guess what, still a Sharingan, while Sharingan ain't Rinnegan.