What is psychic distance?

Psionics are usually claimed to be strictly mental abilities which do not include any magic or rituals. The main source of power is from the mind, and many supposed practitioners draw a distinction between psychic abilities and spirituality. However, there are also those who believe that psychic and spiritual or mystical abilities are related, or even indistinguishable, including some who claim to be psychics. Because of the subjective nature of these experiences, and the lack of measurable proof, the lines between psionics and mysticism are not clear.