Psychic

A psychic is a person who claims to use powers rooted in parapsychology, such as extrasensory perception (ESP), to identify information hidden from the normal senses, particularly involving telepathy or clairvoyance; or who performs acts that are apparently inexplicable by natural laws, such as psychokinesis or teleportation. Although many people believe in psychic abilities, the scientific consensus is that there is no proof of the existence of such powers, and describes the practice as pseudoscience.

Psychics encompass people in a variety of roles. Some are theatrical performers, such as stage magicians, who use various techniques, e.g. prestidigitation, cold reading, and hot reading, to produce the appearance of such abilities for entertainment purposes. A large industry and network exist whereby people advertised as psychics provide advice and counsel to clients. Some famous psychics include Edgar Cayce, Ingo Swann, Peter Hurkos, Janet Lee, Miss Cleo, John Edward, Sylvia Browne, and Tyler Henry. Psychic powers are asserted by psychic detectives and in practices such as psychic archaeology and even psychic surgery.

Critics attribute psychic powers to intentional trickery or to self-delusion. In 1988, the U.S. National Academy of Sciences published a report on the subject, which concluded that there is "no scientific justification from research conducted over a period of 130 years for the existence of parapsychological phenomena". In 2012, a study attempted to repeat recently reported parapsychological experiments that appeared to support the existence of precognition. However, efforts to replicate the results, which involved performance on a memory test to ascertain if post-test information would affect it, "failed to produce significant effects", and thus did "not support the existence of psychic ability" of this kind.

Psychics are sometimes featured in science fiction and fantasy fiction. Examples of fiction featuring characters with psychic powers include the Star Wars franchise, which features "Force-sensitive" beings who can see into the future and move objects telekinetically, along with Dungeons & Dragons and some of the works of Stephen King, amongst many others.

The word "psychic" is derived from the Greek word psychikos ("of the mind" or "mental"), and refers in part to the human mind or psyche (ex. "psychic turmoil"). The Greek word also means "soul". In Greek mythology, the maiden Psyche was the deification of the human soul. The word derivation of the Latin psȳchē is from the Greek psȳchḗ, literally "breath", derivative of psȳ́chein, to breathe or to blow (hence, to live).

French astronomer and spiritualist Camille Flammarion is credited as having first used the word psychic, while it was later introduced to the English language by Edward William Cox in the 1870s.

Elaborate systems of divination and fortune-telling date back to ancient times. Perhaps the most widely known system of early civilization fortune-telling was astrology, where practitioners believed the relative positions of celestial bodies could lend insight into people's lives and even predict their future circumstances. Some fortune-tellers were said to be able to make predictions without the use of these elaborate systems (or in conjunction with them), through some sort of direct apprehension or vision of the future.^{[citation needed]} These people were known as seers or prophets, and in later times as clairvoyants (French word meaning "clear sight" or "clear seeing") and psychics.

Seers formed a functionary role in early civilization, often serving as advisors, priests, and judges. A number of examples are included in biblical accounts. The book of 1 Samuel (Chapter 9) illustrates one such functionary task when Samuel is asked to find the donkeys of the future king Saul. The role of prophet appeared perennially in ancient cultures. In Egypt, the priests of the sun deity Ra at Memphis acted as seers. In ancient Assyria seers were referred to as nabu, meaning "to call" or "announce".