Pertaining to your theory, WF, if Humanity is indeed descendents of the Precursors,[url=http://www.youtube.com/watch?v=nTjktNmt_Eo]this[/url] cutscene would make a lot more sense. Like you said, if the Precursors originally were from Earth, it would make sense that they would colonize Reach as humanity did. It would also explain the assumed-to-be Forerunner artifact in Halsey's lab. Emilie - "What is this stuff?" Halsey - "Knowledge. A birthright, from an ancient civilization." At first I took this to mean that it was a Forerunner artifact. But after reading your theory, I'm not so sure. Since the Forerunners discovered Humanity when Humanity was already in existence, how is their technology our birthright? You might say that the key to the Halo Rings is our birthright, well not necessarily. If Humanity was descendent of the Forerunners, then why did they discover us only shortly before firing the Halo Array? Technically, the Halo Array isn't a birthright so much as it is the gaining of technology given to us. This might not make sense as I am emotionally drained as I right this, but just my two cents.