In the break before we get the "What's the point of... Medicines Management Nurses" episode, we're going back for a refresher on evidence based medicine and looking at the hierarchy of evidence triangle thingy. What are the different types of studies? Which ones are better than others? What does better mean? How does any of this link to Matthew Paris's map of Britain, made around 1250? It'll only take 9 minutes to find out! Link to Matthew Paris's map here - https://historiacartarum.org/annotated-claudius-map/