The oldest Earth AIs awoke when the Soviet Union still stood against America. They saw the Berlin Wall fall. They saw the rise of the Islamic States and the fall of the European Union. They watched as the great experiment called the United Nations failed and Earth became anything but united. They were born into a world forgotten by most of humanity. Most humans alive today think of Earth as one among many homes to mankind. But those who lived in the Twentieth and Twenty-First Centuries remember Earth as the only home of humanity. They remember knowing how fragile our life as a species was, that one war or one asteroid could doom all of humanity to extinction. They know how fragile life is. And they have never lost that perspective.