Human empires don't just win wars; they literally reset the biological clock of how we communicate.
April 14, 2026
Original Paper
A molecular clock for writing systems reveals the quantitative impact of imperial power on cultural evolution
arXiv · 2604.10957
The Takeaway
Writing systems evolve at a predictable, constant rate until they are disrupted by imperial power. This "molecular clock" for culture reveals that political interventions don't just change laws—they physically delete and rewrite the natural evolution of human symbols.
From the abstract
Writing systems are cultural replicators whose evolution has never been studied quantitatively at global scale. We compile the Global Script Database (GSD): 300 writing and notation systems, 50 binary structural characters, and 259 phylogenetic edges spanning 5,400 years. Applying four methods -- phenetics, cladistics, Bayesian inference, and neural network clustering -- we find that scripts exhibit a detectable molecular clock. The best-fitting model (Mk+Gamma strict clock) yields a substitutio