A few centuries earlier ... humans still knew pretty well when a thing was proved and when it was not; and if it was proved they really believed it. - C. S. Lewis, The Screwtape Letters
Yeah, well, you know, that's just, like, your opinion man - "The Dude, The Big Lebowski
from the chapter introduction "How Conversation Became Exhausting, in The Death of Expertise, Tom Nichols. I was listening to conference speakers, in many domains, who use ideas from domains they are not actually familiar with.