Board Thread:Theories/@comment-28420925-20160518121617/@comment-29015168-20160923160759

Maybe the "200 years" reference is referring to the generations of memories one gains from the coordiante? So the coordinate was originally created 2000 years ago and we know within a few years of the beginning of this story Eren will inherit the coordinate and thus have 2000 years of memories added to his mind.