Mr. Elliotto (firstname.lastname@example.org) writes:
People before have theorized that perhaps the Forerunners were mechanical beings, not biological. Well after reading through people's thoughts, I had one of my own. The most prodominant being: Why wasn't the flood destroyed outright if it were so dangerious? This, and possibly the creation of Halo are answered if you assume the Forerunners were machines.
My theory is that perhaps the entire Halo itself was created as a research facility. And I don't mean just for the flood--I mean all the biological life found on the surface of Halo's inner ring was a result of the Forerunners dabbling in biology.