I remember in a recent post Gabe gave comments on HL2's story saying "one group is wrong, but the other is spectactularly wrong". I think we're assuming that the opposing side of Gordon's is the one that is the "spectactularly wrong" one. Maybe its Gordon's team of resistance fighters that have the flawed plan?. And maybe its this consequence that sets the stage for HL3?. I wonder if its the Combine that are the other set of human resistance fighters, I mean it hasn't been confirmed that they are alien.