Why the name Arcana?

Before I wrote my negotiated programme module I was thinking of a name or word that would be nice to use to best describe a collective of people & while searching online I came across the word "Arcana" 

Arcana : mysterious or specialized knowledge, language, or information accessible or possessed only by the initiate - usually used in plural.

I was instantly taken by this & decided it described everything I wanted to get across as a collective of people. Below is the logo I came up with for the project title & will also be used for the site.