User blog comment:The Milkman/Reaper Logic/@comment-4950455-20120520221413

After doing some thinking on this, I recently realized that it's not just negotiating peace between the quarians and geth that goes against the Reapers' theory of organic-synthetic conflict - all of the possible endings on Rannoch undercut their point to some extent.

If the quarians win, that means that our cycle's fearsome synthetic menace that there is no way to be saved from except the Reapers was wiped out by the very race they originally 'revolted' against - and worse, that would have happened even earlier were it not for the Reapers themselves intervening. Yeah, that's sure an unstoppable danger.

And if the geth win, it's just as bad. Sure, they eventually wiped out their creators, but only after existing peacefully behind the Veil for centuries - the quarians would never have been destroyed had they themselves not launched a largely unprovoked attack. And then, after supposedly proving their danger in this way, what's the first thing the geth do? Far from going after the other organics, they ally with them against the Reapers.

So really, no matter how the quarian-geth war ends, it leaves some pretty big holes in the Reapers' "logic".