Marks left by Stone Age humans were surprisingly complex

• Their information density rivals the immediate predecessors of writing

Article Summaries:

• Their information density rivals the immediate predecessors of writing

Sources:

• https://www.economist.com/science-and-technology/2026/02/25/marks-left-by-stone-age-humans-were-surprisingly-complex (Latest source article published: 2026-02-25 18:39 UTC)