"Contrast our “plug-in/plastic” approach with that of our fellow Earthlings. Not having figured out how to eat fossils, they are on a pretty tight budget. They can only burn what they eat, and they have to make solutions from their own bodies or things they find around them. This leads to low-cost, highly-efficient structural solutions that use a handful of polymers, respond to the environment in adaptive ways, and can be broken down and reused by other creatures. This kind of problem-solving results in the highly interconnected and incredibly rich web of collaborative interdependence we call Life."