User blog comment:The Milkman/Mass Effect in Retrospect/@comment-3228423-20130417021124/@comment-3228423-20130417115721

Well, maybe 2 was a way to explore Cerberus, and make them a minor inconvenience from the first game into a possible threat should you ever cross them by telling TIM to f*ck off at the end. Again, maybe the mass relays weren't built to handle actual kinetic impacts of such a scale but they were built to handle energy of supernovae. And that's the problem with the Catalyst, it appears in the last few minutes of the final game, we just assumed it was just an AI because it was the one controlling the Reapers. Yet when talking to the little b*stard, it seemed more and more obvious that it was just a VI (albeit one that's smarter than normal VIs)