The document discusses key differences between physical capital and human capital. It notes that human capital is intangible, inseparable from its owners, built through policy and expenditure, and creates both private and social benefits. In contrast, physical capital is tangible, separable from owners, can be built through imports, and creates private benefits. The document also compares approaches to human capital and human development, noting human development considers education and health as ends in themselves rather than just means to increase productivity.