Languages Are Living Organisms
Every language alive today descends from an earlier form, branching and diverging like a biological tree of life. English, Hindi, Russian, and Persian all trace back to a single ancestor — Proto-Indo-European — spoken on the Pontic steppe roughly 6,000 years ago. This simulation models that process: watch a single proto-language fracture into a family of descendants, each drifting further from its siblings with every passing generation.
The Mechanics of Divergence
Language change is relentless and universal. Sound shifts transform pronunciation (Latin 'c' as /k/ became French 'ch' as /ʃ/), grammatical structures simplify or complexify, and vocabulary is borrowed, invented, or lost. When two populations are separated — by mountains, oceans, or politics — their speech drifts independently until mutual intelligibility vanishes. At that point, one language has become two.
Extinction and the Endangered Majority
Of the roughly 7,000 languages spoken today, linguists estimate that 40–50% are endangered. A language dies when its last fluent speaker dies, taking with it a unique worldview, oral literature, and ecological knowledge. This simulation lets you adjust extinction rates to see how quickly diversity collapses when small languages are lost at the periphery of the tree.
Computational Phylogenetics
Modern linguists use the same phylogenetic algorithms as evolutionary biologists. By coding cognate sets across languages and running Bayesian inference on the data, researchers can estimate when language families diverged — producing remarkably precise dates that often align with archaeological evidence of population movements and cultural shifts.