Precisely. We have "concepts" of truth, which could be way OFF the mark of truth ... if such a thing as absolute truth even exists, which is anybody's guess, or concept.
It's all about ifs, and ifs are not necessarily facts.
Its wider ranging than what you state.
Its all about our pre-conceptions, and our ability to reason them logically to make up a valid concept.
This valid concept may or may not be true within the framework of another world-view.
So in just giving opinions with evidence is not a convincing argument. Evidence is not proof. Opinions are not evidence....