The thing is, I’m not making a blanket argument that it’s necessary to maximize pure mechanical efficiency. And it could well be that striving to squeeze out every last pico-watt of efficiency might have a negative tradeoff with coordination and accuracy. My larger point in all of this wasn’t to argue against using rest strokes, only that it is a mistake to characterize them as “more efficient” and use that as a justification for using them, not that there is no justification for using them.
Part of the reason I “couched” my statements in my earlier posts is because the inter-string distance isn’t 3 inches or 12 inches. If it were, the difference in efficiency would matter. But with the real-world spacing of about 11mm, I’m not at all convinced that it does.
Quoting one of my earlier posts:>
Before continuing, I think it’s worth mentioning that I’m not even claiming that it’s necessarily even desirable to make the smallest possible movement in most “alternate picking” situations. I think @Troy has done a good job of making the case that until you start talking about really extreme speeds, people tend to overestimate the value of “small movements” in alternate picking.
I’m not even disputing that the exercise might have value. I just think that if the exercise has value, it’s for reasons other than the “efficiency” explanation that Rick gives.