Observe how Neil Peart plays a particularly tricky passage of Tom Sawyer around the 3:05 mark in this video from the early 80s:
Now see how he did it in 2011:
Looks like he’s using two hands to do what he used to do with one.
My guess is that’s a pretty impressive adaptation to a natural decline in hand speed. Or maybe just more ergonomically correct.
(Yes, I know I need to be blogging at MMM more. I still love this blog.)