If you're into medical history, then this episode is for you. Phrenology is now considered a pseudo-science, but at one point in history was VERY influential. Find out about this lumpy-skull practice!

Sources

https://en.wikipedia.org/wiki/Phrenology#:~:text=Phrenology%20is%20a%20process%20that,exist%20in%20other%20animal%20species

https://www.britannica.com/topic/phrenology

https://www.smithsonianmag.com/history/facing-a-bumpy-history-144497373/