“This morning, a turtle feeds serenely next to a half submerged Walgreen’s bag. The bag looks ghostly, ethereal even, floating, as if in some kind of purgatory suspended between its briefly useful past and its none-too-promising future. A bright blue bags floats just out of reach, while a duck cruises by. Here's a Ziploc bag, there a Safeway bag.” What is the message of the passage above?