I've been following this topic with great interest because I once had to deal with a volunteer, a retired librarian, who insisted on doing various egregiously bad things, and who invariably met attempts to change things with haughty rejoinder "Young man, I've been working with old books since before you were born!" No longer a young man (but not as old as she), my mind too is now hardening into the set that anything or way that I do not know is irrelevant. . . especially, that volunteers are frequently more trouble than they are worth. My law school contracts professor, in developing the distinction between "gift" and "implied contract for exchange of consideration," used the socratic tool "When is gift not a gift." One hypo he posed was "What if someone leaves a goriller [he was from the Boston area]on your front porch?" Too often, volunteers are a goriller.