yes, but we can learn so much just by listening and watching. There are always little tidbits that he has, or had, since I haven't seen his stuff in I think a few years. I do miss them both.
All the professional machinists can provide methods that we would never think of. Everytime I see something I am like damn. But I don't remember a lot of stuff. If I were smart, I would figure out a way to categorize and log it for future reference.