In the past guitar players have often had their progress slowed down by the fact that they didn’t know the difference between an efficient picking motion and an inefficient one. Most of these guys didn’t know the efficient technique even existed or they would have seen the difference in their playing in mere days after adopting it to their playing. So you’re saying without being hindered by literally not knowing how they were supposed to pick to achieve an efficient picking ability, a kid with moderate musical talent could become “awesome” in 2 years.
The reason I disagree with that is pretty straightforward. Substitute guitar for an instrument in which there is no mystery about the proper way to play - say piano for example. Would you say any moderately talented kid should be able to become an “awesome” pianist with two years of lessons? Would you say that after 2 years of lessons a moderately talented kid should be able to play like Tori Amos or Elton John? I don’t think so. Tori Amos is insanely talented; she’s the youngest person ever admitted into the Peabody Conservatory of music. Had she reached the peak of her playing abilities after 2 years at Peabody or even 4 years? No, not even close. Tori Amos spent 6 years studying at Peabody when at the age of eleven she was expelled for “musical insubordination.” That’s fine. The great rock musicians have always had a streak of rebellion within their souls. Still, the notion that after 2 years of instruction there or even after 4 years of instruction there she had reached the peak of her technical ability and from then on was just learning more musical pieces, but not necessarily musical pieces which required any more ability than the previous musical pieces she had been given to learn just is a notion with which I strongly disagree.
Besides, being incredibly talented, so talented she was accepted at The Peabody Conservatory at the age of 5 puts her well above the level of "moderately musically talented. If she hadn’t reached her technical peak after 2 years or even 4 years, it follows that after the same amount of time, students who were only moderately talented (or as close to that as you can be given that you’ve been admitted to Peabody), would have even less chance of achieving an awesome level of technical prowess after only 2 or even 4 years despite the world class instructors teaching them.
