Board Thread:Naruto Discussions/@comment-4704473-20140625072535/@comment-1512913-20140626151507

This is my final comment on the matter. The canon's closest equivalent of evolution is merger of chakra. 2 chakras merge together over time. So if subject A is for long time exposed to chakra of subject B, subject B's chakra becomes one with that of subject A.

Kaguya is the source of ALL chakra. Hagoromo, who has but a part of her mother's chakra COULD have "upgraded" himself, either by taking his brother's or directly his mother's, but he wouldn't have gotten something beyond what his mother is. In other words, 10:2=5 so 5x2 won't be 11 or more.