Hi again Michael!
I´ve been enjoying this book a lot and I think the chapter on the history of rest strokes is very interesting. I was talking to a friend of mine who plays a very old mexican musical genre called "Son Jarocho", which is heavily influenced by spanish and baroque music and is played mostly on nylon stringed acoustic instruments. This style is at least two hundred years old and it features the "Requinto Jarocho", (a small guitar-type instrument with four strings tuned in fourths) as the lead instrument.
The thing is, as I was watching him play it, I became aware that he was using all rest strokes :shock: with a kind of pick made from horn that looks like a "J" (because of the curve in the playing end this "pick" does not allow upstrokes, so they only pick down) also, while playing his hand looked very similar to the Sinti´s.
He said this technique (rest strokes) is the way the Requinto jarocho is played traditionally, has been since the beggining of this style (XIX century) and was learned from the spanish conquistators.
So from this I concluded that rest stroke picking originally must have been invented in the old continent and that it is probably the oldest plectrum technique there is (no wonder it´s one of the most efficient) it may also predate classical guitar technique for at least a century!
I think this is amazing and I plan to do a more research on it, I would like to hear what you think about it