What are the Similarities between human capital and physical capital?

Human capital and physical capital both serve as essential assets for driving productivity and economic growth. They both require investment to develop—human capital through education and training, and physical capital through machinery and infrastructure. Additionally, both types of capital can depreciate over time; human capital may diminish without ongoing learning, while physical capital can wear out or become obsolete. Ultimately, both contribute to a firm's ability to produce goods and services efficiently.