It's not a matter of if, it's a matter of that being the very case, although I doubt if anyone is ever tempted to delve deeper into the traditional stuff.
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I say again, by defining folk as I have done throughout this thread, I'm not postulating an ideal, rather reflecting on the reality

But how are you defining folk, other than as "what you hear at a folk club"? We all know that the way the word 'folk' is used in practice has nothing to do with the 1954 definition. We know that's the reality; the question is what you think about that reality.