I've recently realized that many of my favorite bassists (John Paul Jones, Paul McCartney, James Jamerson) did not use "proper" technique. Jamerson plucked with a single finger on his right hand, JPJ wrapped his thumb over the neck and used the first 2 fingers on his left hand 80% of the time, etc. I'm sure many other famous bassists do the same types of things. So it makes me wonder...is proper technique really up to the individual? Or would these guys be 10 times better if they shed their "bad habits"?