Lol. Your lack of education on the subject kills me. The Precursors allowed themselves to be beaten. If you'd like to provide evidence of the celestials creating sentient life I'd love to see it. Read up. http://halo.wikia.com/wiki/Precursor http://halo.wikia.com/wiki/Halo:_Cryptum http://halo.wikia.com/wiki/Halo:_Silentium http://halo.wikia.com/wiki/Halo:_Primordium [spoiler] ↑ Bestiarum, page 26: Tier 0: Transsentient As the [Forerunners] had no examples of civilizations with technological accomplishment greater than themselves - with the exception of the Precursors - this is a theoretical ceiling. They can travel intergalactic and accelerate evolution of intelligent life. These may be creatures of legend. http://halo.wikia.com/wiki/Bestiarum[/spoiler]