The Ruin song might actually be called the history of
all people. It begins with the story of
creation, progressing to the rise and fall of civilizations.
This cycle of ruin and regeneration parallels the course of human
history - prehistoric times, the ruin of the Ice Age, the rise of
dynasties such as the Roman Empire, and their demise through
warfare, conflict, and death. The times of ruin, which in the
modern day can be compared to the World Wars and the threat of
nuclear annhilation, are interspersed with periods of peace and
I believe that the history in the book is called the Ruin Song
because, as Kira noticed about the pattern, "each time the ruin was
worse and the rebuilding more difficult" (Chapter 12). It is
the memory of the last ruin which remains foremost in the outlook
of the civilization, which to the time of the story had not yet
been able to recapture the "blue" of tranquility.