Yep, Rumbo is correct, it just isn't easy. I remember learning Learning to Live, it took so long. Seemed like an easier one but it took so much time. It's not just the fast fretwork, but the chord structures and time signatures. By the time I moved on and practiced another DT song, I had forgotten half of LTL. There is just too much going on in the songs, and if you are making mistakes with Wither, just forget it. Don't set your goals so high because you are heading for failure. We are not being harsh but just realistic.
I think people don't fully appreciate what this band and others like them pull off every night. For a band like DT to be as good as they are every night and remembering so many of their songs is incredible, especially when the alter the setlist so much.