Both of these volumes are primarily devoted to the concept of probable realities, a concept originally introduced in SETH SPEAKS. This concept is the metaphysical counterpart of the parallel universe theory presented in Quantum Physics. It is one of the most important and complex concepts contained in the Seth material for it explains the actual mechanics involved in the materialization of events into our daily lives. According to this theory there are other probable versions of history that exist in alternate dimensions. These versions are as real as ours, and each individual has probable selves that exist in these "parallel" universes.X
