Will our descendants conquer the last barriers standing between humanity and Olympian glory? Or may we encounter hurdles too daunting even for our brilliant, arrogant, ingenious and ever-persevering species? There can be no better topic for this contemplation -- the last in a series commissioned for iPlanet -- about our future in the coming millennium. Essay number one cast perspective on our accomplishments during the Twentieth Century and the second dealt with near-term dilemmas we may face in the twenty-first. Now let's take a long-view, exploring the possibility that our great grandchildren will be "great" in every sense of the word... and have problems to match.