Déjà vu

I’ve mentioned this experience once before on this blog (here) when commenting on Carl B. Becker’s Paranormal Experience and Survival of Death—in that context regretting Becker’s exclusion of that experience from the subject matter that he covers under the category of the paranormal. Then I mentioned the experience again in yesterday’s posting—and the post promptly brought some visitors who were using a Google search with the phrase. My own conviction is that the experience is the most widely-known instance ordinary people have of precognition. In my own case—and I think this is generally the case—I experienced the déjà vu feeling much more frequently in childhood than later, but these experience still recur, if very rarely. They’ve always fascinated me. Indeed it was when I first encountered J.W. Dunne’s writings that I felt sure that I’d approached some kind of explanation of the phenomenon.

Déjà vu literally means “already seen” in French. The phrase was first used by the philosopher and parapsychologist Émile Boirac (1851–1917) in a letter to the French journal Review Philosophique and later in his book, The Future of the Psychic Sciences. In that book he also proposed the word metagnomy as a substitute for clairvoyance, thus “knowledge of things situated beyond those we can normally know” (link). Frederick Meyers (1843-1901), the founder of the British Society for Psychical Research (SPR)†, called it promnesia, using a Greek formation meaning prior memory. The simpler common-language French phrase won the linguistic battle. Déjà vu is simply a very powerful sensation that some situation, right now, has happened before. Indeed when it does, we often know what will happen next, including what people will say.

The notion that we are remembering a dream—and a precognitive dream, at that—is totally persuasive if we have ourselves actually had one or more such dreams which we remembered at the time when had them—so that when the déjà vu moment later actually arrived we already knew that we had dreamt it.

The Paranormal Encyclopedia.com here notes that one psychology professor at least, in 1896, Arthur Allin, then of the University of Colorado, Bolder, had suggested that the source of déjà vu was forgotten dreams. The modern explanation, summed up by Wikipedia here, rejects precognition as an explanation and trots out a long list of other supposedly more scientific explanations of that squirrelly sort that make those of us  sublimely confident in the Big Picture smile with bemusement.

†The SPR has an American counterpart, the American Society for Psychical Research, Inc., reachable here.