I draw him into conversation, and bring the subject around to reality, suggesting that the Republicans need to pay more attention to reality than to ideology. He murmurs agreement.
I give the "97 out of 100 doctors say you need therapy for that tumor" argument, and he agrees that yes, he'd start getting therapy...and I say, "so why are Republicans so set against the scientific evidence for human-caused climate change?"
He says, "sir, there are some conservatives who accept that evidence, and not all conservatives think that way, and..." his voice kind of trails off.