The Human Development Index (HDI) doesn't consider inequality in countries, meaning two nations with the same average achievements can have the same HDI even if their distributions of achievements are different. To address this, a new method called the Inequality-Adjusted Human Development Index (IHDI) has been proposed. This method adjusts the HDI to reflect how human development achievements are distributed across populations and dimensions. By incorporating inequality into the index, the IHDI aims to provide a more accurate reflection of people's actual achievements in health, education, and income.