The scientists, astronauts, and soldiers who lived through the events described in these chapters were human beings, with strengths and flaws. Some showed surprising heroism in the face of annihilation, while others failed at crucial moments. But none acted in vain—for at the very least, we all of us are still here, still alive to read and learn from this unlikely chronicle of human survival, a saga known now by its code name: the Andromeda Evolution. D.H.W.

