Economic growth is often framed as a balance between capital accumulation and labor expansion. But in modern models, these factors don’t operate independently. Capital without skilled labor produces weak returns, and labor without technology loses productivity. Growth isn’t a sum — it’s an interaction.

Over time, the quality of labor — education, adaptability, skills — determines how effectively capital can be used. At the same time, capital itself is evolving: data, algorithms, and knowledge infrastructure are becoming as important as physical assets. The debate shifts from “which is more important” to “how they amplify each other.”