Plantinga's Properly Basic Beliefs

Alvin Plantinga's states that Christians do not need any arguments for believing in God because believing in God is a properly basic belief. He goes further to say that arguments are insufficient for the basis of a religious belief. Some beliefs are properly basic: perceptual beliefs, memory beliefs, certainly, but also: beliefs based on testimony, belief in other minds, mathematical beliefs, belief in the uniformity of nature. Other beliefs are non-basic. These are inferred from, …

…because there is a real issue about how to prevent seemingly contradicting evidence against our basic beliefs. When I say that I see a computer monitor in front of me, there is no obvious competing belief. We can also agree that the mere existence of controversy doesn't stop a belief not to be properly basic. But the more controversy there is, the less plausible it will be to claim that the belief is simply basic