Board Thread:Theories and Speculation/@comment-28819877-20170515143845/@comment-31099706-20170516174157

@Thekillman. Well the sage himself didn't know the full power of his own gifts. Since he was shocked Sasuke's genjutsu and all. I think it's more or likely that he just gave his chakra( and just chakra) and what resulted after it was the chakra formed among each of their own specific skills. I mean remember Kurama said that Sasuke's prowress was like the sage himself, so him awakening rinnegen could be of his own ability.

I don't know why he would give one eye for rinnegen? it seems weird.

While I think it's more if the awakening that natters rather than the time? I mean (if I remember right) Madara awakened it after he lived alone for years and years and seeing that his dying age or death is coming he in full pursuit awakened it? I mean Nagato awakened a deactivated eye through a very strong emotional feeling. And as we know Sasuke was being in near death state himself, maybe this eye that controls life and death is awakened only after nearing death by old age or death in battle. Or it could just be because of the difference in chakra amount.

We can also not say that the Sage was the only one to have the power because Momo had it too. And Momo's own chakra didn't have any special feat(I guess) but after absorbing and merging his chakra with Kinshi thus powering him uo more, his rinnegen turned to a normal one.

And we can't always be right about other's gaining rinnegen. Since Obito had both Rinnegen(already Sage's chakra) and zetsu/hashirama cells with him, for more than weeks. and I think he did know how Madara awakened his rinnegen, so him not even at a saying he could would mean that it's not possibke for even him?

Ashura reincarnations taking hold of Rinnegen wouldn't be impossible but maybe a stretch. And even if they could awaken their own rinnegen without sharingan then I don't think it'll be that good with their abilities. Since Nagato learned to use his abilities for like 20 or more years. While Obito was able to do it better in less weeks. So I think from taking both the non transmigrant representives of the Clans of eyes and the clan of Body. I think this really indicates how different it would if they were transmigrants. While Uzumaki had nice control with it and he might have been already talented enough for it.He had the chakra reserves to use it efficently enough, but Uchiha had the skills and power to use it masterfully.

And anyways, the Uchiha tablet left by the sage himself was for the Uchihas and the Uchihas only, because of their sharingan. So it seems if the Sage sees himself warns them of the rinnegen.