A lot of times I have seen the nice simple slogan, one-finger-per-fret. And keep-your-thumb-behind-the-neck. But most people don't do that when they play. All of the players I most respect use shifts and slides to get where they are going, and have their thumb either hooked over the top of the neck or close to it. I have always thought this is bad technique, but since then I have seen John Paul Jones, Paul McCartney, Jack Bruce, Geddy Lee and any number of lesser names doing precisely that. And sounding fantastic, of course. So, my question is, why is it that the one-finger-per-fret myth is continually pushed when a completely different approach has been used to play so many of the great bass lines? Obviously for some lines one-finger-per-fret is the best approach to take, and equally obviously most of the time this is not the case. And the don't-hook-your-thumb-over-the-neck-at-all "rule" has been shown absolutely unneccesary by players who play and sound better than those using the "correct" technique. If you are stretching four frets or playing scales with no shifting it's necessary to keep the thumb at the back of the neck, but for many lines it's simply wrong. My approach at the moment is to use a three-fret reach and shifts to play many lines, and use one-per-fret for anything I can't do that way. Your thoughts, please. Disclaimer: I'm not claiming in any way that one-finger-per-fret is bad technique or in some way inferior. I can also see how it may be necessary for players of extra-string basses to play with the thumb on the back of the neck always.