I've appeared in St. Luke's Gingerbread Players' productions of
I might have said English Catholic Moralists but that Chesterton and Lewis are wonderfully entertaining writers (in very different ways) and terrific storytellers, which mere Moralists usually are not.
I like alternate history when the point is to show that some of the things we take for granted weren't inevitable, but I think this story could have been told without the added conceit, by constructing a future culture that included all the elements he wanted to adopt from Aztec culture. Still, Harlan's extrapolation of Aztec society to technological imperium feels consistent and believable.