http://www.healthinfomanagerschools.com/ - With needs there has to be proper development. To cater to the ever growing population on the earth, there has to be even manpower distribution so that the strain on the main fields does not become too much of a pain. In earlier days there were less number of people -- a doctor could treat his patients and at the same time manage all the allied work that was required. However, the magnitude of demand and supply is never well balanced. Strictly speaking with an economic sense, it never should be -- otherwise there is bound to be saturation in the market.