“After a few seconds of silence, Peter asked, “Do you know why they did it? Why they killed most of the people on the planet, and civilization at the same time?” Lucy shook her head. “Nobody knows, I think. Just stupid people, doing stupid things. They killed their enemies, but it made their enemies kill them at the same time.”

Carty, Rodger E. Falling Up (p. 401). self. Kindle Edition.”