Rules cut both ways: "That is not folk" - "Yes it is!" - "That is folk." - "No it is not."

The rules are what they say. The program is what they do. Say as you do; do as you say, is not human nature. Sooner or later, everybody feels entitled to a little bending &c.

As a discographer, I've seen the same old, familiar bins at every retail outlet and bootsale every year. Buyers & sellers find them useful starting points. The internet & lecture hall are mostly nonsense.

And, it's not unusual to see inventory shifted from one bin to another. What was once folk or bleeding edge rock & roll might be in the oldies section by now... same music.