Board Thread:Versus Debates/@comment-3523655-20200804020538/@comment-39350828-20200821123158

Sidd77 wrote: Are you seriously telling me that its's easier to assume that no one has ever tried to copy their techniques rather than assuming that they just can't? Yes. The sharingan can see their handsigns and movements so it can be used to copy jutsu but it can't copy kekkei genkai because their body is physically incapable of using them. That makes sense. What doesn't make sense is why they'd be unable to copy a hiden which is, for all intents and purposes, the same as regular jutsu except that it's only taught to members of a certain clan. If kakashi only taught the chidori to members of his family and they never taught it to people outside his family, it would be a hiden. Nothing would've changed about the nature of the jutsu that could make it un-copiable. About kakashi mastering it, I don't know what you mean. When kakashi copies a jutsu with the sharingan he does it exactly like the way his opponent did it. In general, I would disagree with you and say that he can master techs with the sharingan, but in this situation I would say he would have to differ from kidomaru only in the process of shaping it because kidomaru uses his extra arms when he does it.