For all the environmental troubles single-use shopping bags cause, the much greater impacts are in what they contain. reducing the human footprint means addressing fundamentally unsustainable habits of food consumption, such as expecting strawberries in the depths of winter or buying of seafood that are being fished to the brink of extinction.

Manufacturers have long chosen plastic for their products on the basis of price and functionality., But creating a more sustainable relationship with plastics will require a new dexterity on our part. It will require us to think about the entire life cycle of the products we create and use.

Plastic should be a high value material... [It] should be in products that last a long time, and at the end of the life, you recycle it. To take oil or natural gas that took millions of years to produce and then to make a disposable product that last minutes or seconds, and then to just discard it--I think that's not a good way of using this resource. (Robert Haley)

Looking at the two chairs together, I see a fair representation of the partner we've found in plastic: a Janus-faced companion who can rightly inspire our deepest admiration and our strongest disgust.