When we look back on the history of science and scientific progress, we celebrate the pioneers who dared to make life-changing discoveries. The truth is that the first people to introduce a paradigm-shift almost always face persecution, and many are overshadowed by the less-controversial minds who follow them. Such is the case of Ignaz Semmelweis, a Hungarian doctor who fought a lifelong battle against a disease he couldn’t see and that the medical establishment repeatedly told him wasn’t real. How does a scientist or doctor combat bacteria when they don’t even know it exists? The epidemics bacteria, viruses, and germs brought to innocent hospital patients wracked hospitals of the day, but the history of medicine is as much one of complacency and cosmic explanations as it is about breakthroughs.