I had an interesting discussion the other day with a relative. anytime I have given a source in the past, they would always state 'false news! False news!'
In a recent conversation, however, they went a little further and said 'false news! Channel 2 [ABC], channel 4 [NBC] channel 7 [CBS], Washington Post, NYTimes, CNN! All false news!' I just let this go, but it was difficult. (they named their channels in their time zone, but I knew what they meant.)
So, after some time passed, I was speaking to them again on another topic and I asked them if I could ask a serious question. Did they think that all of the sources they mentioned that day really do make things up or lie about what they are reporting? They said yes, absolutely. I asked, 'how do you know that?' They said 'how do you know they are not?' so, I told them that I read original sources where I can, compare the reports of one group with others, look at original interviews, etc.
Then I asked them, 'how do YOU know what you hear is fake?' they said, 'well, most of it is just common sense, I can tell its a lie just by my common sense.' (so, no research, no reading, no multiple sources, etc.

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Now, I felt a little bad about this part, but I asked them in a supportive voice, 'oh, so if what you hear doesn't agree with what you already know is true, then that's your common sense talking?' they said 'yes!!' I then asked, again supportively, 'does your common sense understanding always match what you already know is true about Trump being a good President?' the answer, 'Yes, of course. Because it's always true.'
I wish I could say I was kidding, but this was a real conversation. You can't fix stupid.