Good one: cutouts of "tree huggers," wrapped around actual trees, urging you to "VOTE EARTH" by switching off your lights for an hour. These cutouts are made of cardboard.

1. Cardboard, trees, 'Tree Hugger.' Yea.

2. Doesn't the process of manufacturing life-size photorealistic sloganeered cutouts for advertising purposes require, you know, electricity? How many people would have to switch off the porch light for an hour to make up that manufacturing energy cost, I wonder? Do you think that number is greater or less than the number of people persuaded to do so solely by the intellectual heft of these tree-wrappings?

3. Conceptual failure illustrated.