User blog comment:DYBAD/Character Sheet/@comment-4867780-20151201114520/@comment-4867780-20151203092513

Selforge is effectively a plane of its own, existing in an independant space-time. It is composed of Selforge City (unique and central), Selforge Satellites (secondary bubbles) and the Inner Planes (network of adventurous realities).

The difference between them and the Possibility Matrix is that all of them actually exist, created to serve a stable and specific purpose, while the matrix is a mental simulation within Lawrence's mind, manifesting the overall potential of the data he accumulated. The matrix is infinitely bigger than Selforge since it doesn't require any resource, and allows the exploration of countless possibilities without any risk of damage or repercussion due to its virtual nature.

The ability to freely modify, materialize and reintegrate any part of the matrix also offers vastly more flexibility than the permanent Inner Planes, which are essentially independent aside from periodical updates, guaranteeing an incomparable feeling of immersion to adventuring citizens.

It is worth mentionning however that the Possibility Matrix is only accessible to Lawrence and Seira, and mostly used as primary template database and predictive model interface for the optimal management of Selforge City and the Inner Planes.