The document discusses the digital divide, which refers to the gap in computer and internet use between different groups. It examines factors that contribute to the digital divide such as income, age, education level, disability status, race/ethnicity, and location. On a global scale, key variables that influence the digital divide are economic development, infrastructure availability, market competition, human capital formation, and political regime. While internet use is growing worldwide, large gaps remain both between developed and developing nations as well as within countries.