Medieval economics

I just remembered a podcast that I heard some time ago. It's titled "Hear: Bloody, Miserable Medieval Economics" from NPR's Planet Money. It describes the harsh reality of medieval economics and includes some concepts that we may have seen in MMOs or movies (such as guilds, knights, craftspeople, professions and kings). It was a world where knights were evil, guilds were oppressive, and the black plague helped usher in the industrial revolution. It's a good listen and it definitely changed my perspective on certain things.