One of the biggest benefits of modern technology is that human longevity and health have improved because of its application. As understanding of the body and its functions improves, and as new tools to help heal it (lasers, sonograms, enhanced medication, and nonintrusive surgical tools, just to name a few) are created, life lasts longer. Not only does life extend, but people can live more comfortably, and recover from wounds and diseases that even a half a century ago would have been fatal. In many cases these people live full, productive lives.