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Sean M. Carroll


Author Bio (Off Site)]

Why (Almost All) Cosmologists are Atheists (2003)

Those who closely study the origin, development, and structure of the universe tend to disbelieve in any spiritual dimension to it. Science has inadvertently discovered that religious pictures of the world are false; when speaking to the same questions, science and religion invariably get different answers. Cosmology has no need for a First Cause since the Big Bang might simply be a transitional phase in an infinitely old universe or, alternatively, there may be no "before" the Big Bang anymore than there is a "north" of the North Pole. Appeals to alleged fine-tuning are presumptuous: physicists extrapolating from the earliest well-understood moment after the Big Bang using the laws of physics alone would erroneously deem our universe inhospitable to life. How, then, can we reliably anticipate the likelihood of life arising in hypothetical universes with different laws? Even supposing that physical constants are in fact "tunable" (which they may not be), constants might take on different values in other universes; and as Carroll puts it, "intelligent observers will only measure the values which obtain in those regions which are consistent with the existence of such observers." Finally, cosmology betrays unintelligent design: entire classes of fundamental particles exist that would have no impact on life in they had never existed. Evidently, a simple materialist formalism could offer a complete description of the universe.