Psychic energy is metaphysical energy. One example of this are neutrino particles, which pervade the universe, can flow through matter, and also move under direction from human will. One can take this energy and use it according to their will to interact meta (meaning like above) the physical realm around them. In other words, it can interact with multiple physical factors simultaneously to create the changes desired by the user. This is just basic occult knowledge. Why do you think exactly that witches used to be hunted down and killed? Was it because they had the means to oppose Jews? The Rabbis want the Gentile populace blind to this reality so they can use it all to themselves.