CONCEPT
Economic Complexity Index
Hidalgo and Hausmann's empirical measure of what a country knows how to make — deceptively simple, predictively powerful, and now being tested against the AI transition's reshuffling of national fitness.
The Economic Complexity Index measures the diversity and sophistication of a country's productive output as a proxy for the depth of its accumulated productive knowledge. Countries exporting complex products — machinery, fine chemicals, precision instruments — score high. Countries exporting simple products — raw materials, basic textiles — score low. The index has a peculiar property that makes traditional economists uncomfortable: it predicts future growth better than they do. The relationship holds across time periods, continents, and development levels. The knowledge is the asset. The output is the symptom. And the symptom is measurable in ways the asset is not, which is why the index works — it infers the invisible asset from the visible symptom with sufficient accuracy to outperform direct measurements of the asset itself.
In The You On AI Field Guide
The index operationalizes Hidalgo's broader claim that productive knowledge is the fundamental determinant of economic development. Countries with high economic complexity grow faster over subsequent decades than countries with