Manny Pacquiao and Floyd Mayweather: Boxing, Physics and Brain Injury
In a perfect world, a highly trained, heavily muscled man would not punch you in the head. Fortunately for most of us, the world is indeed perfect in that one small way. But most of us arent boxers. For those who aresay, Floyd Mayweather Jr. and Manny Pacquiao, who square off this weekend in a