Extra-sensory perception

Extra-sensory perception, or ESP, refers to the supposed ability to acquire information by some means other than the normal human senses, such as the traditional five senses of taste, sight, touch, smell, and hearing, or any of the other senses well known to science (balance, proprioception, etc.)

Because the definition of sense is vague, the the precise definition of extra-sensory is as well, but the term is generally meant to imply sources of information unknown to modern science. Despite the vagueness of the definition, no one has ever demonstrated ESP in a generally accepted way. The James Randi Educational Foundation (http://www.randi.org/) offers $1 million to anyone who can demonstrate ESP or any psychic phenomenon. No one has ever collected.

The study of such phenomena, including telepathy, clairvoyance, and telekinesis amongst others, is known as parapsychology