Alex Steffen Quotes
There is no such thing as garbage, just useful stuff in the wrong place.
Steffen, Alex, editor. Worldchanging: A User's Guide for the 21st Century. Harry N. Abrams, 2006.
The major reason for not yet harvesting waste is the labor, caital, and energy costs of recycling relative to the value of the resource is too high. Technology improvements and greater shortages continuously change the equation in favor of harvesting more and more resources.
Alex Steffen (born c. 1968) is an American futurist who writes and speaks about sustainability and the future of the planet. He emphasizes the importance of imagining persuasive, positive possible futures: "It's literally true that we can't build what we can't imagine,... The fact that we haven't compellingly imagined a thriving, dynamic, sustainable world is a major reason we don't already live in one."