Okay kiddo, biomedical informatics is when doctors and scientists use computers and technology to help them learn more about medicine and the human body. They use big computers to store lots of data like medical records and scientific research, and special programs to analyze that data and look for patterns. This helps them understand how diseases work, how to treat or prevent them, and how to make sure people get the best care possible. Think of it like a super-smart robot helper that helps doctors and scientists do their job better and help more people stay healthy.