This talk will cover the context, origins, and core concepts of the Plan 9 operating system.

It will focus around Plan 9's high-level ideas that make it unique, and fundamentally different from Unix. This includes files, namespaces, the 9p protocol, networking, graphics, and the limitless potential of file servers, which can only be achieved due to its design.

I will aim to provide a genuine understanding of Plan 9's approach; not just what the concepts are, but why they exist and how they solve real problems that traditional Unix cannot.

Although this talk assumes familiarity with Unix-like systems, it is not required to understand what will be presented. In fact, heavy assimilation with Unix tends to be a handicap rather than an advantage.