How can life expectancy and literacy rates affect the quality of labor in the economy?

First of all, let's talk about literacy rates...

If you were an owner of a business that had exceptional products to sell, who would you employ to sell those products? Would you employ those who are unable to draft out letters, write out advertising copy and speak to the public in a sophisticated manner, or the contrary? Let's say you had enough money to employ those that are powerfully literate... What would it mean for your business? Imagine being able to persuade venture capitalists to invest in your business at will. Imagine being able to inspire teams of people to drive your company to success. Imagine being able to promote your company's vision and interests through newspapers, television programs and radio broadcasts? Would you be able to fulfil your company's requirements without the use of great communicators? Great communicators are important for all businesses and they can even be vital for countries as a whole. When a country can communicate its ideas and visions effectively, it is capable of selling its products and services around the globe. It can even have overwhelming influence.

The law of supply and demand