I was re-reading a chapter in my copy of Philosophical Foundations for a Christian Worldview, and I was also watching a few videos by Veritas48 on the subject of reformed epistemology (who is BTW my absolute favorite youtuber, I cannot recommend him enough), and I figured I would bring a few points of his and Plantinga to the Atheism union board. Now to clarify, I think that there is a rather wide preponderance of evidence for the existence of God, but regardless even if such a preponderance did not exist, the Theist could still be warranted in believing in God
The majority of discussions between Atheists and Christians probably go something like this: The Atheist takes an evidentialist epistemology and says that one cannot be justified in believing in God unless there is some evidence. The Theist fails to provide any sort of positive evidence, and the Atheist walks away from the conversation feeling that he is the victor. the Atheist may even contend that one is not justified in believing in God even if God exists because there is no evidence (there is a difference between knowledge and true belief). Now the Evidentalist will say that one is only justified in believing in any sort of truth if such a belief is properly basic (aka foundational to knowledge) or is based upon evidence which is ultimately properly basic. A belief, according to the evidentialist, is only properly basic if that belief is incorrigable or is self-evident. For instance, one can know that 2+2=4 because it is self-evident (However quite a few philosophers deny that there are such things as "self-evident" truths). Further, one can know that one feels pain because it is incorrigably true. For instance, a hypochondriac can know that he or she feels pain even though the source of pain is illsory. One cannot be mistaken about their own mental states.
Now Alvin Plantinga asks why must properly basic beliefs be true or incorrigable. Plantinga gives 2 examples of beliefs which are taken to be rational and even properly basic even though they are not self-evident, or incorrigable. The first example he gives is belief that the world was not created last thursday (google "Last thursdayism" and "Bertrand Russel"). Such a belief is not self-evident, and it is certainly not incorrigable. Further, one cannot prove with evidence that the world was created 5 minutes ago. But obviously we all take such a belief to be true and rationally justified. The second example which alvin Plantinga gives is the criterion for deciding a belief to be properly basic. The notion that properly basic beliefs can only be incorrigable or self-evident is itself niether self-evident nor incorrigable
Alvin Plantinga asks why one cannot take God to be foundational to knowledge? It is for this reason (the untenability of proper basicality) that I believe that a theist can be justified in believing in God without evidence.
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