by James Evans: A no-nonsense technical archive focused on "hard skills" like smelting iron and synthesizing chemicals. The Ultimate Guide to Rebuilding a Civilization
| Priority Level | Technology | Time to Achieve (post-collapse) | |----------------|------------|--------------------------------| | 1 | Pottery, basic blacksmithing, soap | Weeks | | 2 | Waterwheel, lime kiln, agriculture | 6–12 months | | 3 | Blast furnace, basic acids, paper | 2–5 years | | 4 | Steam engine, telegraph, dynamo | 5–10 years | | 5 | Vaccines, radio, steel rails | 10–20 years | | 6 | Internal combustion, electrical grid | 20–50 years | The Ultimate Guide To Rebuilding Civilization