"Don't," Mark says sharply. "Don't even think about trying to change that. Who knows what it'd change if that bomb isn't dropped." Who knows what'll change for their family, personally, that is - probably Barrayaran history will go on largely the same regardless. But if there isn't that relocation of the Vorkosigan capital, who knows what'll change - how many chance alterations will result in little redirections of history, how much might spiral outwards into...Well. Maybe, ultimately, into Mark and Miles not being born at all. And he doesn't know about his brother, but Mark isn't willing to let that happen. He has fought way too hard for way too long for this life of his. He is not having all of that made pointless because he's been erased by a time paradox.