WMGs for Pyramids. Warning: Potential unmarked spoilers.
- Or, quite possibly, he stagnates because Djelibeybi does. He ultimately disappears becuase he's so rooted in the old ways, a changing of the ways means a new Anthropomorphic Personification is needed.
Because who'd be more inclined to field-test the recursive nature of space/time than a bunch of genius theoretical mathematicians? And who, if not camels, would reason that if you want humans to start work on hayfields and stables, you need somebody to prod those lazy apes with a stick?
Ephebe is close enough to Djelibeybi to travel there within less than a day on camelback, and we know that blowback from its detonation sent Dios back 7000 years. Prior to this, we see the Great Pyramid not only twisting time and space, but absorbing the flares of temporal energy from neighboring pyramids. So when Teppic inhumed the thing, it actually contained more accumulated time than even the whole of Djelibeybi could hold, so it spewed these surplus energies out randomly in all directions, beyond the river nation's very slender borders. While the Men In Saffron might indeed have acted to tidy up much of the resulting mess, a random burst of temporal flux struck the tavern where Xeno and Ibid were debating over lunch, and swept them back a hundred years into the past, to appear in Small Gods. (Being, y'know, Xeno and Ibid, they may or may not have noticed the difference.)
- If nothing else, it makes a bit of thematic sense given Djelibeybi's conservativism that there would some impact in areas that used to be part of Djelibeybi's borders (before they sold them off to pay for more pyramids).
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