Question: How to conduct an energy audit, comparing physical labour to electricity to fossil fuels to machinery.

– Look up specific instructions for conducting an energy audit online.

– Goal: a system that produces more than it consumes over its lifetime.

– Need to consider things like what it takes to make steel, the labor to install something, the requirements of running electricity, how long a tool lasts, etc.

– Living systems, done correctly, will self-replicate to provide good energy audits