Splatt, let me turn your question on it's head. Part of learning to ride a bike is riding the bike. Same thing with playing guitar; only time playing the guitar is ever going to make someone a guitarist. I think back as a kid, when two guitarists would have to sit down and show one another how this riff was played or that lead was played. Later, TAB came along and really took off in terms of a tool to show someone else how to play guitar parts without having to be in the same room at the same time. Rocksmith is really nothing more than a game that can show you how to play songs in its own variation of TAB and, better yet, provide feedback in terms of whether you played the right notes at the right time. Yeah, you'll still have to learn theory, and hopefully how to read music, on your own. But this will get someone started and, if they stay interested, the rest came come later. The most important thing is to get the next generation playing guitar music.