- Ditto649
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- Exalted Heroic Member
well nobody knows! the forerunners were in a great war with the flood. they had to retreat. maybe they were getting killed off and did not want to be removed from existance. they had to think of a plan, to rid the flood, otherwise they were all going to die. they made the halo rings which would, when activated, destroy all setient life (all life that the flood feed on) and by this happening, the flood would slowly be destroyed. but by activating the halo rings, the forerunners would kill their own species immediately, instead of waiting and being wiped out by the flood, slowly but surely. however, i believe that the forerunners that were inside the arc at the time that it was activated would have survived the blast from the halo rings, therefore they should still exist in halo 3... do you understand?