No idea what the "Nemesis System" refers to (the only thing that comes to mind is the cyborg movie Nemesis by Albert Pyun), but there is no way that the 9:1 NPC thing or Roberts' emergent AI theorycrafting is going to be implemented. The level of complexity and detail implied in Robert's 9:1 NPC model was ** 5 years ago, it is ** now and it will be ** in 5 years too.
Well maybe if all the npc's stand around like statues he can pull it off.