The importance of human development index is crucial for Greece. The researchers examined human development in different areas of Greece by measuring factors like health and education. They followed a method used by the United Nations to create a Human Development Index for each Greek region. The goal was to show how regions in Greece differ in terms of human development. They found variations in human development levels between different parts of Greece, highlighting the need to better understand and address these disparities in order to improve people's well-being and potential in all regions of the country.