Communication & Knowledge
Preserving books, printing, education systems, basic chemistry, mathematics, and the scientific method.
Topics in this Domain12 topics
Preserving Books and Documents
BeginnerHow to protect written knowledge from moisture, fire, insects, and decay.
Making Paper and Ink
BeginnerPulping plant fibers into paper. Producing iron-gall ink and charcoal pigments.
Oral Tradition and Memory Techniques
BeginnerHow pre-literate cultures preserved knowledge. Mnemonics and structured storytelling.
Basic Record Keeping
BeginnerTallies, ledgers, and census-taking. The administrative minimum for a functioning community.
Education System Design
IntermediateHow to structure learning for children and adults in a rebuilding community.
Mathematics from First Principles
IntermediateThe mathematical knowledge essential for engineering, trade, and science.
Long-Distance Communication
IntermediateSignal fires, semaphore, messenger systems, and eventually basic radio.
Cartography and Navigation
IntermediateMaking maps and using the stars. Surveying land without GPS.
Calendar Systems
IntermediateTracking seasons, predicting planting times, and organising communal life through astronomy.
The Printing Press Revisited
AdvancedBuilding a simple printing press from wood and type. Mass knowledge distribution.
Basic Chemistry for Survival
AdvancedSoap making, gunpowder, medicines, and materials — chemical knowledge that matters.
Scientific Method and Experimentation
AdvancedHow to design experiments and accumulate reliable knowledge in a resource-scarce world.