Board Thread:Boruto Discussions/@comment-30168130-20170527042428/@comment-732150-20170529024533

All the information we have is Sasuke's account of it, so we take that at face value because there is nothing else to suggest his account is wrong. Even if Boruto has prior nature transformation training interfering with his learning, even if Minato originally intended the Rasengan to have nature transformation added to it, the fact is the most basic form of the jutsu does not have nature transformation in it. What Sasuke told Boruto to learn, and what Boruto asked Konohamaru to teach him, was just the basic Rasengan, so there is no reason to think Boruto would try anything beyond that, at least not until he has the basic jutsu down. The problem with your premise is that you're questioning information that is given as is for no good reason, and then adding speculation to try making sense of it, while everyone in this thread so far has taken all information at face value and try building on top of that. You're adding extra speculation that is just unnecessary. Your bike analogy makes no sense, because riding a bike is just one thing, while what Boruto did is two things, shape and nature transformation, one which he was actively trying to employ, and the other something he had no reason to employ, but ended up doing anyway despite not being the point of what he was trying to achieve.