The following post-turned-essay was inspired from a skirmish in the “Demons, Ghosts and Spirits? Do they exist...” thread. To recap, Bonhomme stated the belief in telephone telepathy—when someone calls you at the same time you call them—and calculated his opinion of its improbability.
Confirmation bias. Subjective validation. You remember the hits and forget all the misses. As James Randi is fond of saying, believers of the paranormal are “unsinkable ducks” (i.e. when people are told to consider all the failures, people respond “No, that just means it works only some of the time”).
When considering the headlines “Family wins lottery twice with same numbers” and “Pennsylvania woman wins $1M lottery twice” in which “Lehigh University professor Bob Storer placed the odds of winning twice at 419 million-to-1, if 100 tickets are played,” the overcoming of nearly impossible improbability must seem simply magical. But as 1969 Noble Prize winning physicist Stephen Weinberg said, “A journalist who has been assigned to interview lottery winners may come to feel that some special providence has been at work on their behalf, but he should keep in mind the much larger number of lottery players whom he is not interviewing because they haven’t won anything.”
The most prominent pseudo-scientist on telepathy is Rupert Sheldrake. A few years ago he conducted an experiment of telephone telepathy and it even made a blurb on CNN. It cannot be stressed enough, he is the best of the best in his field. His claimed results would’ve been amazing except the sample was small (4 callers), only people who believed in telepathy were recruited, Sheldrake himself was a caller—he scored the highest, of course—and it was only after the phone calls were made were the participants and callers asked if their guess was correct (rather than write it down beforehand). These people wanted telepathy to be true and their agenda is thus unveiled. Such methodological disasters are the norm for parapsychology.
Okay. Consider not only all the times you called someone and they were not thinking of you, but the times someone called you and you were not thinking of them. Consider all the times you thought of someone and they never called you. Telepathy has catastrophic problem of not only lacking mechanism but devastated by internal inconsistency.Bonhomme:
All the approximate calculations I've made came out to about 1 in 50 to 100 million odds of all these events having occurred among calls to these people, not even taking into account the absence of such simultaneous phone calls among everybody else, which, as I pointed out, goes against the "coincidence" theory by the results being too "concentrated". But you're the probability expert, Deep Dish, so I invite you to have a go at the math...
Confirmation bias. Subjective validation. You remember the hits and forget all the misses. As James Randi is fond of saying, believers of the paranormal are “unsinkable ducks” (i.e. when people are told to consider all the failures, people respond “No, that just means it works only some of the time”).
When considering the headlines “Family wins lottery twice with same numbers” and “Pennsylvania woman wins $1M lottery twice” in which “Lehigh University professor Bob Storer placed the odds of winning twice at 419 million-to-1, if 100 tickets are played,” the overcoming of nearly impossible improbability must seem simply magical. But as 1969 Noble Prize winning physicist Stephen Weinberg said, “A journalist who has been assigned to interview lottery winners may come to feel that some special providence has been at work on their behalf, but he should keep in mind the much larger number of lottery players whom he is not interviewing because they haven’t won anything.”
John Allen Paulos wrote the bestselling book Innumeracy: Mathematical Illiteracy and Its Consequences of how misunderstanding statistics can prompt, among other things, delusional belief in the paranormal.You might be in awe of the person who won the lottery twice, thinking that the odds of anyone winning twice are astronomical. The New York Times ran a story about a woman who won the New Jersey lottery twice, calling her chances “1 in 17 trillion.” However, statisticians Stephen Samuels and George McCabe of Purdue University calculated the odds of someone winning the lottery twice to be something like 1 in 30 for a four month period and better than even odds over a seven year period. Why? Because players don’t buy one ticket for each of two lotteries, they buy multiple tickets every week (Diaconis and Mosteller).
Skepdic entry on “Law of Truly Large Numbers”
On the corollary, the New York Times ran a review of his follow-up book Beyond Numeracy:A man suddenly thinks of an old friend that he hasn’t heard from in some years. At that moment the phone rings: it’s the old friend he just thought of. Such experiences lead many people to believe in mental telepathy. Striking coincidences also undergird much of the credulity directed towards the forecasts of palm readers, numerologists, and astrologers. The fortune teller predicts a serious medical procedure. Later that year you have gallstone surgery. Unless you are a clear-thinking Georgia Skeptic, that fortune teller is likely to get your business again.
The inability to recognize that such “impossible” coincidences are in fact quite common (millions of people will have “predictive” dreams, even if there is only one chance in 10,000 that a particular dream will match some future event) is a symptom of what John Allen Paulos calls “innumeracy”: ignorance of basic mathematics and the lack of fundamental mathematical skills. Paulos argues that the innumerate is just as handicapped in a complex, high-tech society as the illiterate. Ironically, though, while hardly anyone is proud of being illiterate, many people flaunt their innumeracy. Fear and hatred of mathematics are common, even among the otherwise well educated.
(1991 book review)
On that corollary, scientific studies which invalidate telepathy and anything paranormal/pseudoscientific (which far exceed any supporting studies) never make the news headlines for the same exact reason.By loudly touting a few correct predictions and conveniently overlooking the much larger number of false predictions you have created the illusion that you can see the future. This phenomenon, which Mr. Paulos calls the Jeane Dixon effect, “is quite widespread and contributes to the tendency we all have to read more significance into coincidences than is usually justified. We forget all the premonitions of disaster we’ve had which didn’t predict the future and remember vividly those few which seemed to do so. Instances of seemingly telepathic thought are reported to everyone we know; the incomparably vaster number of times this doesn’t occur are too banal to mention.”
The most prominent pseudo-scientist on telepathy is Rupert Sheldrake. A few years ago he conducted an experiment of telephone telepathy and it even made a blurb on CNN. It cannot be stressed enough, he is the best of the best in his field. His claimed results would’ve been amazing except the sample was small (4 callers), only people who believed in telepathy were recruited, Sheldrake himself was a caller—he scored the highest, of course—and it was only after the phone calls were made were the participants and callers asked if their guess was correct (rather than write it down beforehand). These people wanted telepathy to be true and their agenda is thus unveiled. Such methodological disasters are the norm for parapsychology.
Many analysts of parapsychology hold that the entire body of evidence to date is of poor quality and not properly controlled; in their view, the entire field of parapsychology has produced no conclusive results whatsoever. They often cite instances of fraud, flawed or potentially flawed studies, a psychological need for mysticism, and cognitive bias as ways to explain parapsychological results.
(wikipedia)