The individual will see a return in the form of wages, and will benefit from a strong economy. As a society, we must assist underdeveloped countries to achieve economic growth, and to begin investing in human capital. Since this article first appeared, there has been much praise and much criticism for it. Today, many still believe that society needs to invest in people for the sake of a stronger, more productive economy, and also to increase the opportunities and choices open to the individual. All the forecasting tools we have are problematic.
More training leads to better work skills.
There are not necessarily 'better' skills, just ones that fit what serve the needs of the organization at the time. Things change so fast that people tend to learn more on the job. The need to improve one's skills comes from having to compete in a job market with people who are in many cases over-qualified. Training enhances employability. In other words, for various reasons, individuals with appropriate skills do not find work.