Human Space Exploration: The Next 50 Years, Mike Griffin, Aviation Week
"Prediction is difficult, especially the future," said quantum physicist Niels Bohr, and no one has since captured the underlying concept quite so cleverly. But having been foolish enough to accept the challenge of speculating upon where the next 50 years will take us in human space exploration, the first question to be answered is, where to begin? What is the global view that can best shape our thinking? It is so very easy to be completely wrong, since a variety of radically different futures in spaceflight can be presumed with equal apparent credibility today."
Editor's update: Copies of this article were frantically jumping across the Internet today - with arm waving claiming that this was a "speech" Mike Griffin would soon deliver - somewhere. Wrong. This was an article intended for publication from the onset. Speech texts do not include multiple embeded tables (as the circulated Word file included) - nor are they written as this article is constructed. Moreover, prepared speeches always carry a statement as to where they are to be delivered.