Tragedy of the Commons Explained with Smurfs

from The Science Creative Quarterly, snip:

"So in order to prevent Gargamel from smashing all the Smurfs into gold, or Coal Plants from giving them neurological disorders by dumping mercury all over them, or farms from polluting their water with run off fertilizer we need to establish a market system that approximates the value of smurfs. We need Smurf Credits, which are like Carbon Credits, only cuter..."