[jumpinjeff]

There are two ways to know what scale you are playing based on where you are on the fretboard. One is to memorize and know that you are starting on Note “X” or you can listen and match tones. My personal take was I needed a bit of both as I am tonically fluid. I get easily fooled by thirds and fifths when formating scales in my head. I never met a harmony I couldn’t wonder off and away with. : )