[Something about supply chains.] Who makes bottles? Do the farmers have plows, or just pointy sticks? I guess it could look like the neolithic, if you allow them pottery, and that's a kind of survival, but do you also want to protect them from invasion and diseases? How much survival is the aim? Wouldn't science, and innovation, and creativity, help improve survival? So ... imagination? Comic books? Pets? Poodle manicurists? But of course survival ceases to be the main goal by this point.