The textbook framing that the environment is a small subset of the economy inverts reality: the economy is a wholly-owned subset of the environment, since everything bought, sold, built, or consumed relies on natural flows (sunlight, water, minerals, soil, energy, pollinators, climate stability) which are preconditions not optional inputs; we can print money but cannot print topsoil, restock fossil aquifers, or recover dead coral reefs, so when the biosphere frays the economy follows.