Foucault's Pendulum

I got my undergraduate degree in semiotics. The director of the undergraduate program was friends with Umberto Eco and spent most of the first year course convincing us that Eco was one of the foremost thinkers of the late twentieth century, especially when it came to semiotics. This lead me to read several of Eco's novels, including Foucault's Pendulum. Being a naive young man, I thought the title's Foucault was Michel Foucault, not Leon Foucault. This mistake meant that I was very confused by Eco's novel and never finished it. It wasn't until I read the picture seen here that I understood who Leon was and what he had done. A decade later.