Board Thread:Theories and Speculation/@comment-3568954-20141110160729/@comment-3568954-20141110163847

Rage gtx wrote: @Actionmanrandell, problem is we talking about fiction, hard semantic rules don't apply here. If something not stated directly it always has chance to be proven wrong, because last word is with Kishi.

this is not about semantics. the 4th databook says that

Naruto gained the ability to use basic and advanced natures not just through bijuu but also through the Rikudo Sage mode which granted him the Knowledge and ability to understand the very nature of chakra if one understands the nature of chakra one would be able to easily change there chakra nature.

also. we already know chakra natures are bound to DNA.