that figurure is about double germany's entire auto industry. >> some are taking self-optimization even further, like these biohackers in pittsburgh. they're taking a diy approach, building monitororing devices n their home laboratory. the little boxes collect data and analyze it on the spot -- within the body. heart rate, blood sugar, and cholesterol -- when a value moves out of the normal range, the biohackers step in. a brave new world in the search for meaning and personal growth. >> society seems bent on striving for perfection -- optimal performance, beauty, and health. science and technology has opened the door to new diagnostic procedures that make imperfection harder and harder to accept. which raises key ethical questions. what does it mean to decide in favor of a child you know isis disabled? just what is a life worth? we head to south africa to meet some people who show that life isis hugely valuable, whether is able-bied d or not. >> my name is edward ndopu. 20 years ago medical experts told your mother that due to spinal muscular atrophy, you would not live past your fifth