From my experience with a friend who went off the conspiracy deep end quite a bit before the pandemic already, I can't see it helping at all. I deeply care abou

From my experience with a friend who went off the conspiracy deep end quite a bit before the pandemic already, I can't see it helping at all. I deeply care about the friend and I tried to engage with him in many ways, assuming that he would somehow be accessible to reason. The reality is, he was not. Every argument/fact I brought to counter a claim was dismissed, because it was mainstream media/science/... At the same time he would happily use the same sources if they supported his point of view. I also tried the opposite trying to push e.g. the lizard people conspiracies, to show the fallacy of his arguments. He would completely dismiss those, because "everyone knows that is rubbish", while arguing for a conspiracy which has hidden the true laws of physics for financial gain. Unfortunately I do not have an answer how to talk with people like that, but it needs a much more serious intervention than rational talk.