Book: Rare Earth: Why Complex Life is Uncommon in the Universe

[Jeff V]

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No matter how rare the conditions allowing complex life prove to be, this alone can never be an argument in favor of intelligent design. Those conditions have to exist for anyone to actually notice. That we notice them here on Earth tells us nothing beyond the fact that those conditions are possible.


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This is the point that IDers either fail to acknowledge or cannot comprehend.

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You can use the facts that they exist, and the rarity to assign a probability.