I am curious now. Everyone seems to be talking about methods like visualization and memorization to learn the upper parts of the fingerboard-- methods that are pretty divorced from actual playing.i take it on faith that this site is full of guitar teachers and other people who are more knowledgeable than me, so I wanted to ask. Why would someone learn the upper parts of the fingerboard differently than one would learn first and second position? Speed? Would you recommend learning first position the same way? For me nothing worked except for playing in the position(s) although I admit that the process was not super fast for me. I am curious now. I quit using Sagreras before I got to that part of the fingeboard, so I would like to know what he says. I am someone who tends to value abstract thought over muscle memory, yet for this task nothing but muscle memory worked for me, although I admit that I went through a fairly lengthy period of having to consciously think about where notes were. The question has begun to intrigue me. (Of course I am almost as "bad" as Glassy about posing weird or difficult question.) If you are reading this, Glassy I do love love your questions.