In this episode we pick up the history of medicine just when it begins to get more scientific. This is great for the general health of humanity but less good for us as we are frequently out of our depths. We soldier gamely on through the discovery of the circulation of blood, the founding of hospitals, germ theory and vaccinations. Otto does a great solo slot on penicillin and we even discuss the heart-lung machine, see image below. We make a couple of references to Otto's sister Ava-Jane who is a one-person history of medicine.