There was a fascinating article in yesterday’s Washington Post regarding the search for extra-terrestrial life, and recent developments in the field of astrobiology. For the most part it’s a straight science story, and well worth your time if you’re interested in that sort of thing. There is one place, however, where the article goes where it probably shouldn’t:
In addition, the Hubble Space Telescope and other instruments have given researchers new data about the evolution and structure of the universe — information that makes it increasingly appear to be “fine-tuned” for life.
Lord Martin Rees, England’s Astronomer Royal made that argument as the keynote speaker at NASA’s spring astrobiology conference — saying that life could not exist on Earth or anywhere else if the basic physical dynamics of the universe were not almost precisely what they are. Slight changes in the strength of the electrical force that holds atoms together, of the pull of gravity, or of the total mass of the universe would have made it difficult for stars to form and create the heavy elements essential for life, and impossible for them to remain active long enough to support the process of evolution.
Many religious thinkers see this fine-tuning as an argument for the existence of a creator, but Rees and other cosmologists offer a different explanation: that our universe is but one in a world of multiple (or infinite) universes. However it came into being, Rees argued, our universe is inherently life-supporting, and there is no reason to believe that that potential has been realized only on Earth.
So, on the one hand, you have the argument that the life-friendliness of our universe is the result of the work of an intelligent creator who established conditions in which life would flourish.That can’t be established with scientific certainty, though I think there’s a level of probability to it that cannot be ignored unless one rules the idea out a priori (as would, for instance, a Richard Dawkins). On the other hand, you have the speculative idea that there is an infinite number of universes, and we happen to exist in one of those that support life. There is no evidence for the existence of multiple universes, and it is in the nature of things that we likely will never have any, that it will forever be a matter of unprovable speculation. Yet, many of those who propose the latter as a way of countering the former do so because the idea of intelligent design is “religious” rather than “scientific,” because it is not “falsifiable,” or because there is no “evidence.”
Pot, meet kettle.
Posted by David Fischler
Posted by David Fischler 
