Artifacts shed light on social networks of the past

(Phys.org) —Researchers studied thousands of ceramic and obsidian artifacts from A.D. 1200-1450 to learn about the growth, collapse and change of social networks in the late pre-Hispanic Southwest.

Pompeii 'Wall Posts' Reveal Ancient Social Networks

Think of it as the earliest version of the Facebook wall post: Ancient Pompeii residents revealed their social networks through graffiti on actual walls.