Dawes and Jong on Defeating the Christian's Claim to Warrant

Dawes, Gregory and Jonathan Jong. "Defeating the Christian's Claim to Warrant", Philo 15:2 (2013). Here's the abstract:

Alvin Plantinga notes that if what Christians believe is true, their beliefs are warranted. It follows, he argues, that the only decisive objection to Christian belief is a de facto one: an argument that shows that what Christians believe is false. We disagree. A critic could mount a direct attack on the Christian’s claim to warrant by offering a more plausible account of the causal mechanism giving rise to belief, one that shows that mechanism to be unreliable. This would represent a powerful de jure argument against Christian belief.