User blog comment:Arbington/The Next Cycle/@comment-1679409-20120805182531/@comment-1679409-20120805190715

That's a good point, Arbington. The fact that the Reapers harvest the galaxy's space-faring races, leaving the rest to develop, makes me think the Reapers are just skimming some harvesters here and there. I certainly haven't heard anything about space-faring harvesters.