Board Thread:Theories and Speculation/@comment-28717679-20160611095118/@comment-7292165-20160611162046

Ravenlot 27 wrote: You can't copy elements, you must firstly master them by yourself. Only then you can copy a jutsu of particular element with the Sharingan. So Kakashi was one of the few people who were able to naturally master all the 5 elements without any enhancements. You don't have to master it, just be able to perform it. Like Sasuke could copy Lee's speed to a degree, but only lasted like 5 minutes due to his body not being uses it and quickly wared out.

SixPathsSasuke wrote: if the 4 databook said that he can use all 5 basic elements he mastered to some degree he probably could at least use any rank-b technique of each element. And yet that's the problem with this databook, saying certain people have certain natures and we don't know what jutsus they have.