Knowledge Nostalgia

 
 If you listened to a rock music station in 1977, and you were playing along with the radio as a way to learn an instrument, you would have been playing along with ZZ Top songs. I know I was, but I’ve since forgotten what it was like to play that way.Once one form of learning is replaced there’s no going back. But one of the ways of getting off the grid of the replaced “wiring” is to