User blog comment:Master Sima Yi/Assassinews 12-05-'15 — Assassin's Creed: Syndicate has been revealed!/@comment-151.227.83.19-20150515191019/@comment-89.142.44.54-20150517110452

So nobody knows why "sages" were created in the first place?

It was because they couldn't find a better way to put Bartholomew Roberts in the game. Roberts was not a Nassau pirate like Hornigold, Blackbeard, Calico Jack and others that appear in Black Flag. In fact he started pirating in 1719, so thats toward the end of Black Flag.

And the best thing they come up with was: lets make him a "sage" a reincarnation of "first civilization" member Aita and his blood opens the Observatory, the place that protagonist is searching. Seriously a 10-year old kind would come up with something better.