(quote from RealReality.org/Real_Faith_and_Reason_Vol_2_-_Scientia.pdf)

The Weakest Link

As we discovered previously, we can’t know assumptions. That means we can’t know anything we derive from assumptions. An assumption is the weakest link in a chain of thought since an assumption has zero strength. That means the entire chain of thought is an illusion. It’s a vapor.

Ungodly thinkers claim to have “a high level of certainty” at times. Then they flip-flop and use words like “assumption” or “axiom” at other times. Their ways are moveable, so you can’t pin them down. As stated earlier, it’s not that ungodly thinkers don’t know anything. God reveals both natural and spiritual reality to ungodly thinkers, but they don’t acknowledge Him or thank Him. That’s why they can’t tell the difference between truth and imagination. So they have both reality and make-believe, but they can’t tell the difference. By contrast, those who acknowledge Christ are learning to discern good from evil, truth from error, and reality from make-believe. They’re learning discernment on the pathway from glory to glory as the Holy Spirit transfigures them into the image of Christ. (Romans 8 and 2 Corinthians 3) While they have incomplete discernment, they have true knowledge. However, they only have true knowledge of what God has revealed, so they have partial but true knowledge.

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