Elizabeth Holmes wowed investors, board members and journalists with live, in-person demonstrations that made it seem like her blood-testing machine worked. But most of these demos were faked. Behind the scenes, the blood samples were tested either manually or on third-party lab equipment. It's an astoundingly bold deception that was enabled by a software application Sunny Balwani wrote. Learn more about your ad choices. Visit megaphone.fm/adchoices