I once encountered a religious person attempting to debunk the geologic age (4.5 billion years) of the Earth by citing unconformities. I wasted nearly half an hour of my life attempting to explain that unconformities are actually very compelling evidence for, not against, the geologic age of the Earth. Many years later Sam Harris explained why I failed by saying “If someone doesn't value evidence, what evidence are you going to provide to prove that they should value it? If someone doesn’t value logic, what logical argument could you provide to show the importance of logic?”.,(reply>), @Harris What? Try reasoning with someone who is inherently unreasonable? No thanks. I'd be better off just referring the person to videos of Sam Harris, Richard Dawkins and Christopher Hitchens who are ("were" in the case of Hitchens) far better at exposing religion for what it is than I will ever be.