User blog comment:Bronzey/Dark Energy and Mass Effect 3/@comment-71.174.134.198-20100828024827

I think it might tie into "The reapers are your salvation through destruction!", the line that the Collector General says right at the end of the game. Perhaps using mass effect fields disrupts the natural balance of zero point energy which destabilized stars, or Element Zero taps into the heart of the nearest sun to do its trick, or somesuch. The Salvation Through Destruction thing seems like the reapers, being so ancient, know about the cyclical nature of the universe. Why else withdraw beyond the galactic rim? They could just chill in the galaxy and harvest each species as it develops. My two cents. Not worth much, eh? :)