I think that works admirably, supposedly Ul'dah was around before Sil'dih fell, so perhaps an early Lalafelln' scholar who lived in Ul'dah and visited Sil'dih had copies made that were later circulated in Ul'dah (and greater Eorzea) which would lend credence to it as a dated text and one that's heavily analyzed.
Hmm...
Hmm...