Fellows, the reference to coconut shells was by way of British irony. I was trying to find the a most unlikely thing to which you might ascribe the increase in pollution. I said:
'importing the shells' - it is most unlikely that anyone in their right mind would import such a low value waste product.
' to make artists charcoal' - surely ironic as this is a niche product where the bulk importation and firing of a low value waste product would surely outweigh any minor added value to the finished product.
Thus together these two thoughts when conjoined create, surely, stimulus to direct thought towards the apprehension of the reverse point by means of the anti-intuitive nature of the corollary.
I think that clarifies!
John