The use of mental powers to manipulate matter and energy, to sense, and to communicate. It has been demonstrated that minds (human or non-human, conscious or unconscious, intelligent or unintelligent) contain some capacity to operate without apparent use of physical facilities. Until circa – 1000, psionics was little studied in most regions, except on a disorganized level (parapsychology, the occult, spiritualism, and so on). It was known and practiced among the Zhodani, and by some minor races, but it was by no means widespread. However, during the Long Night, many races, (human and others) turned introspective. As a result, many finally began to engage in serious research in psionics, which revealed much about the empirical nature of the phenomenon, although the principles involved were, and remain, little understood.