Introduction
In February 2014 philosopher William Lane Craig and theoretical physicist Sean Carroll debated the rationality of believing God exists given the evidence in cosmology (the video can be found here). On several occasions Carroll observed that "theism" is not well-defined, and thus does not lend itself to scientific testing by putting forth falsifiable predictions. William Lane Craig (both at the beginning of the debate and at other times) affirmed that he was not putting forth God as an alternative to naturalistic models, but was scientifically defending the truth of premises in an argument with theological significance. Both debaters seemed to misunderstand one another regarding this. Craig did not give any indication of understanding the scientific concern of Carroll's observation by dismissing the idea that God was even a feature of a competing model, while Carroll did not seem to understand the philosophical insignificance of his charge or the fact that Craig was defending a mere theism that only identified God as "Creator" and "Designer."I have heard Carroll's challenge on several occasions from scientifically-minded people who are critical of cosmological and teleological arguments for God's existence. Since they dismiss Christianity (and theism, in general) as an unscientific hypothesis, my intent with this post is to investigate the scientific perspective that is responsible for this complaint, the philosophical significance and insignificance of the complaint, and the proper response that theists (and Christians, specifically) should provide to remove the validity of the charge of being "unscientific." I will conclude the post with a challenge to both naturalists and Christians, and I will revisit the debate in light of this discussion.