Robin Collins' Argument from Fine-Tuning
Collin’s argument goes as follows. The Existence of the fine-tuning in question is not improbable given theism. The existence of the fine-tuning is very improbable under the atheistic single-universe hypothesis. So the fine-tuning provides strong evidence to favor the theists design hypothesis over the atheistic single-universe hypothesis. Underlying this argument is the Prime Principle of Confirmation, which states that whenever we consider two competing hypotheses, an observation counts as evidence in favor of the hypothesis under consideration if the observation has the higher probability. So Collins thinks fine tuning is evidence of there being a God rather than there not being a God. Fine tuning is the idea that the basic structure of the universe such as the fundamental laws of nature, distribution of matter, the initial conditions of the big bang, etc. is balanced on a razors edge for life to occur. The atheistic single universe hypothesis states that there is only one universe...