User blog comment:Master Sima Yi/Assassinews 10-05'12 — World Gameplay Premiere/@comment-184.146.173.3-20120521051702/@comment-4913722-20120522121920

I strongly think that inside the vault is an old human race without the PoE interfering and upgraded technology. This means they will be stuck using swords and less modern weapons allowing you to play as desmond in modern times without taking away what it means to be an AC game.