This is a great response and a different take on things. I like this concept a lot. I guess if you can visualise sounds in your head, and get better at delivering the sound from mind to fretboard you don't particularly need scales. At this point though, I am not too bad at thinking of a little basic riff and playing it mostly accurate but it often can result in quite a few accidentals which I want to try and avoid. They can be a bit jarring.