This little doc breaks down the rules as written contained within Genesys books (Core, Realms of Terrinoth, and Android: Shadow of the Beanstalk), while further articulating how a GM or designer would go about the art of generating a new species, and more specifically, how to distinguish between species and archetypes. Beck really takes you step-by-step in easy to understand terms, and then by taking you through the process of creating an archetype and then applying it to a species. This little PDF may be pay as you want, but I plan to hand over more $ for mine. Nicely done and a solid buy!