Those who set it know that people in lower socioeconomic status won't live until 77.8. https://www.sciencedaily.com/releases/2017/01/170131190102.htm https://w

Those who set it know that people in lower socioeconomic status won't live until 77.8. https://www.sciencedaily.com/releases/2017/01/170131190102.htm https://www.sciencedaily.com/releases/2017/01/170131190102.h...