What are the major differences between the new HDI and the original HDI?

The new Human Development Index (HDI) incorporates additional dimensions to better capture well-being, including a focus on inequality, health, education, and standard of living. Unlike the original HDI, which primarily measured life expectancy, education, and income, the updated version emphasizes the distribution of these dimensions and introduces the Inequality-adjusted HDI (IHDI) to account for disparities within populations. Furthermore, the new HDI employs more nuanced metrics, such as mean years of schooling and expected years of schooling, to provide a more comprehensive assessment of human development.