Final answer:
Education is key for human capital deepening but has limits in providing additional benefits due to diminishing returns, opportunity costs, and societal resource constraints. A certain threshold exists after which more education may not yield proportional gains, and complete understanding in all areas is unattainable.
Step-by-step explanation:
Education's role in human capital deepening is crucial as it imparts knowledge and skills, thus increasing productivity and potential economic growth. However, there are limits to how much additional benefit education can provide. This is because as individuals become more educated and knowledgeable, the incremental gains in productivity may decrease, and further education may not lead to comparable increases in economic output or personal development.
One must also consider the existence of opportunity costs. Engaging in prolonged education means time is not spent gaining work experience or earning an income, and the resources allocated towards education could have been used elsewhere. Furthermore, the law of diminishing returns can apply—after a certain point, more education yields lesser relative benefits, and there's always a ceiling to knowledge as one can never achieve complete understanding of all areas.
Limited resources within society also play a role in determining the maximum output of goods and services, including education. This might mean that as education tries to expand, it could encounter resource constraints, affecting its quality or availability. And, as the quote from Socrates suggests, recognizing the limits of one’s knowledge is crucial for genuine learning and progress in one's education and beyond.