Roger Cicala has it right in his post about Assumptions, Expectations, and Plastic Mounts.
“I was rather amazed to find all these facts spoken so dogmatically by people who claimed them to be absolutely true. I make it a rule never to argue with people who claim absolute knowledge, no matter how wrong they are. But I will occasionally show them pictures.”
His job is repairing camera lenses but the same phenomena shows up in other fields. There are a lot of folks out there whose passion for some idea well outweighs their expertise. Trying to get them to stop and think and to back off a bit on their certainty is like trying to get a confirmed alchoholic to admit that maybe he has a problem.
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