Would you believe that some people are not capable of understanding the folly in their their thinking because they are dense, or because they have an agenda that they are pushing.
Some are not able to put two linear, logical thoughts together so having a [battle] with them is a waste of time. If you don't believe me go battle trapper about how the earth is not flat like he says. LOL
Sometimes just providing facts that have sources backing them will suffice in shooting down the folly at least to the ones that aren't dense.