Board Thread:Theories and Speculation/@comment-29576485-20180419215247/@comment-27924662-20180420023713

I think so its one explanation of the course of event's involving Rinne Sharingan, Rinnegan and Sharingan. But you could think of it as Total power remaining constant across the generation. So Kaguya strictly should have same power as Hagoromo and Hamura; Hagoromo has same power as both Ashura and Indra and so on. It seems what can be inherited seems to be a finite pool which is the reason for such variation. This could be in major reason why the original dojutsu got depowered across the generation.