User blog comment:Ralok/Let us talk here/@comment-160529-20101116003008

http://www.bungie.net/Forums/posts.aspx?postID=36430414&viewreplies=true&postRepeater1-p=1

stable theory, but it is forgetting some of the other what ifs

like what if the crystal was made by neither the precursors or forerunners

what if the ruins in the babysitter were not made by an advanced race and rather a primitive one

how did a multitude of human infection forms get upon the harbor world in halo wars (i am not calling it a shield world because harbor world fits better)

not to mention if humans ARE forerunners then that would explain the human forms in the ruins in the babysitter

theres just to much speculation

but there are three definitive facts, the covenant hiearchy believed humans to be forerunners, the forerunner artifacts believed humans to be forerunners

and forerunners had exactly the same body shape as humans

more evidences suggests humans as forerunners

but perhaps that will be the twists in later games, when humans begin to embrace this identity they learn it is false, and thus their new ideals nad goals are shattered

all and all it makes for rather good narrative, and helps keep the series stable with that level of ambiguity, just enough to make you say "i believe this, but i am not quite sure if its true"