Yes:
the only thing that's changed is *us*. Mackenzie's ideas haven't become obsolete, we have!
[Sorry, but I'm almost sure JK will remember that Twilight Zone episode, with Burgess Meredith as Mr. Wordsworth -- the book-reading, God-believing librarian whom the State considers obsolete -- and Fritz Weaver as the Chancellor, who betrays his essential cowardice in the moments before their impending deaths. But wait: JK is not obsolete, I am. I basically sit here typing, while he's effortlessly & successfully changed with the times. He joined Dismal the first time he saw it!]