Wikipedia has it thus: Circular reasoning (Latin: circulus in probando, “circle in proving”; also known as circular logic) is a logical fallacy in which the reasoner begins with what they are trying to end with. The components of a circular argument are often logically valid because if the premises are true, the conclusion must be true. Circular reasoning is not a formal logical fallacy but a pragmatic defect in an argument whereby the premises are just as much in need of proof or evidence as the conclusion, and as a consequence the argument fails to persuade.
“a logical fallacy in which the reasoner begins with what they are trying to end with.” As applied to the age of the Earth, scientists who believe the theory of evolution have taken a 19th century theory concerning the age of fossils in sedimentary rock and used it to date the rock containing similar fossils elsewhere. They use the fossils to date the rock and rock to date the fossils—circulus in probando—it begins and ends in the theory of the age of the fossils. It is, therefore, a logical fallacy! “A fallacy is the use of invalid or otherwise faulty reasoning,”(Wikipedia)
Our education system has indoctrinated everyone under its influence into this fallacious reasoning as if it were absolute truth! The only truth in it is that there are fossils in sedimentary rock. EVERYTHING beyond that is conjecture and theory. A theory requires proof. A theory of itself proves nothing!
Science is supposed to be about finding truth; make observations and theorize concerning cause. The problem with the Theory of Evolution is that a theory was proposed specifically to reject God’s revelation of creation and then the search was on to find supporting evidence! Denial of truth never, ever changes the truth, but it can sure make the ‘wisdom of the wise into foolishness’ when the denial is exposed for what it truly is!
Remember ‘The Emperor’s New Clothes’? It was the truth revealed. The Theory of Evolution is exactly the Emperor’s new clothes trying to hide the truth of creation. Eventually everyone will see it for what it really is. Pray the Spirit will open the eyes of the blind.