It is kind of interesting how hindsight clouds the view. It is probably quite difficult, considering the vast amount of learning tools guitarists have now, how amazing those guys all were at a time when learning how they played was a matter of sitting down and learning it right from the record ( which was not easy, considering little electronic tuners didn't exist and all but the most expensive turntables didn't have strobes on them and all seemed to run at slightly different speed). Now when just about anyone can learn Clapton , Hendrix, EVH, or just about anyone else who came out with something new and different just by surfing the net for teaching aids or buying books of tabliture with accompanying DVDs or CDs, it is hard to imagine that at one time these guys were considered untouchable. Just about anyone with a little talent and enough ambition and patience to sit down and use the tools available can learn it. And of course now we not only have all the learning aids, we also have all the guitarists over the years who were influenced by them to learn from. And then there is the learning of how they got those sounds. In the eighties all the rack mount stuff started appearing that had just about any combination of amps, cabs, and effects you could imagine. Now there are even pocket devices that have programs in them with names like "purple haze" to emulate the sounds those guys got. Once you get their tone and overall sound down learning the music is a whole lot easier. All of which takes the mystique away that all those guys in the 60s and early 70s had. But back then, it was all so new, mysterious, and other worldy.