Communication & Knowledge

How to protect written knowledge from moisture, fire, insects, and decay.

Pulping plant fibers into paper. Producing iron-gall ink and charcoal pigments.

How pre-literate cultures preserved knowledge. Mnemonics and structured storytelling.

Tallies, ledgers, and census-taking. The administrative minimum for a functioning community.

How to structure learning for children and adults in a rebuilding community.

The mathematical knowledge essential for engineering, trade, and science.

Signal fires, semaphore, messenger systems, and eventually basic radio.

Making maps and using the stars. Surveying land without GPS.

Tracking seasons, predicting planting times, and organising communal life through astronomy.

Building a simple printing press from wood and type. Mass knowledge distribution.

Soap making, gunpowder, medicines, and materials — chemical knowledge that matters.

How to design experiments and accumulate reliable knowledge in a resource-scarce world.