What would a truly resource-minimum, viable human ecology—viable in the sense that we are fed, warm, and dry—look like? What proportion of the current system is useless economic activity, and what proportion is useless economic activity entangled with legitimate human need? Environmental policy documents don't answer these questions, but they do provide information that helps us to craft a vision. Utilizing Oregon's consumption-based greenhouse gas inventory—which looks at all energy use to meet in-state consumption, regardless of where that energy use occurs—we throw out some numbers. We estimate that less than 5% of current economy activity is essential. A very significant proportion of that is wrapped up in heating, cooling, and cooking. We then examine ways to meet these basic human needs. Having a concrete vision of this nature allows us to contemplate rapid shifts, whether out of a conscious choice to stop destroying the world or because the global economy ceases to function.