I have a couple more questions: So what exactly are the Engineers? Are they some kind of bio-technological organism? Are the Flood just Precursors and how? Why is it that by the time of the halo games taking place that the Covenant became more advanced than the humans? Wouldn't the forerunners have favored the humans and left more behind? One more, who was the Original Didact? And was he split (or why?) was he separated into the iso and ur?