Well, as I said before: Not necessarily. I don't use 4 finger technique for the speed aspect of it, but for the flexibility aspect instead (i.e.: string crossing on a wide spaced 6 string). Speed comes from practicing consistently and slowly, with whatever number of fingers you choose to use. In other words, if you wanna play REAL fast, first you have to play REALLLLLLY slow, and preferably with a metronome . An example of what I'm talking about is in my very first post on this topic: I studied with Dave LaRue for several years, he only used 2 fingers, and was CONSIDERABLY faster than I was (still is too). He got that way by working on his accuracy, the speed followed. Hope this helps.