I read this on the BGG forums and relayed the info to my group. I was explaining the game to a new player and I usually add in things that a cylon or human would do, just so the player isn't coming into the game completely cold. When I explained that humans love the XO card and it's smart to not XO the next player to go she asked, "Why?" Aside from, "Uhhhhh… the next player might be a Cylon," I forgot why. I remembered the method, but forgot the reasoning.
Is it because if they are a Cylon, then they get two actions run amok before revealing on their turn? Was there another reason?