'Would someone who criticises others for being "purists" like to tell us what they mean?'

No, not really. Why should anyone have to justify how they feel? And supposing you do win all the arguments - what does that prove only that you'd be good at having arguments.

Its a matter of sensuality. How do you know that you're gay, or straight? You know about it the way because of the way you feel. Jim knows about the folkmusic that he likes, because of the way it makes him feel.

Personally I see a room full of fiddlers, and mentally I reach for the machine gun. Slow airs, jigs and reels, frowns of concentration, rhythm sections floundering about for the key at every change of direction, conspiratorial smirks of happiness (ho! ho! - gave the rhythm section the slip that time!) from fiddler to fiddler after every identical tune.

Give me Danny Boy and the cribsheet, every time. Everyone to his goat, as the french say. Something like that anyway!