If a living system does not respect the circumstances of the super system it is a part of, it will be selected against.
—Eric Schneider and James Kay
A HAYFIELD WITH MULTIPLE species of grass, scattered blooms of wildflowers, and populations of field mice, voles, and songbirds sets the stage for a story of both economics and ecology: a story of how the economy works. If the hayfield is mowed in timely fashion when rain can be expected, it will regrow and can be cut a second time (in moderate climates) and still achieve additional regrowth before winter. The hayfield’s resilience depends on a critical variable, rain, because of the relationship of rain to other variables. Although mowing ...