
It is written — from cave walls to transformers, the forty-thousand-year project to move knowledge outside the skull
A human brain holds, on average, one lifetime of knowledge, and then it dies. Every technique, every story, every map of the territory accumulated inside it — the name of the plant that heals, the angle of the spear throw, the face of the ancestor — goes with it. Evolution gave us language as a partial fix: knowledge that can be spoken can outlast the speaker, if someone else hears it and repeats it. Oral tradition is the first external memory system. It is also the most fragile: dependent on faithful transmission, distorted by each relay, bounded by the range of a voice and the attention of a listener. …






