Written by Ben Russell
Many unbelievers fail to understand the nature of presuppositions and belief systems. How they simply interpret physical facts themselves such as DNA, fossils, rock layers, star light, and other things to be support for creation or evolution. They simply don’t see bias in our understandings.
Even though they can’t make sense of the concept of evidence, you can even grant them hypothetically that the evidence supports their position of evolution, or anything by exposing they have no bases for trusting their reasoning about it according to their own worldview.
They generally state that other people or peer reviewed journals approve of their reasoning or position, however they must use their reason to interrupt what other people tell them or to read journals and articles. This leads them back to the problem of knowing how their reasoning properly.
They might respond by saying that they can’t know if their reasoning is correct, but neither can you. After they confirm this they have given up knowledge indirectly since reason is required for knowledge. Any statement they say after that they could be wrong about and they can’t provide a justification since they have given up reason. Since reason is necessary for knowledge they couldn’t know anything about you as well.
Another possible response is reasoning is impossible and reasoning isn’t real. This is another declaration that knowledge is again impossible. Also, you must use reason to deny reason. You are using thinking to deny thinking and is self contradictory which leads to being false. Any statement you say afterwards can’t have an epistemology or justification for either. Its the same general problem as being unsure if your reasoning is proper.
Their only justification is using their reason to justify their reason which is a viciously circular argument, while the Christian appeals to God’s revelation to justify their reason which is a virtuous circularity and that is the difference.
Mike Robinson has written an excellent book on the relationship between God, logic, and rationality. Here is a link. http://www.smashwords.com/books/view/121406