There are some fine-tuning arguments that argue for God’s non-existence. One argument was formulated by Sean Carroll in a debate with William Lane Craig. The argument is as follows:
1. If theism is true, we would expect there to be just the right amount of fine-tuning necessary for life to exist.
2. If naturalism is true, we would expect it to be the case that there is fine-tuning that is not necessary for life to exist.
3. We observe cases of fine-tuning (certain physical constants) that is not necessary for life to exist
4. Therefore, certain observations of fine-tuning are better explained by naturalism than theism (or, are more likely given naturalism than theism).
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