Do you remember where you were when you heard that planes had struck the World Trade Center? That the Challenger shuttle had exploded? Or that Nelson Mandela had been released?
Your memories may be different from mine, but not as different as Fiona Broome’s. I remember watching the live TV footage of Nelson Mandela walking to freedom after 27 years in captivity, while Broome, an author and paranormal researcher, remembers Nelson Mandela dying in prison in the 1980s.
When Broome discovered that she was not the only person to remember an alternative version of events, she started a website about what she dubbed “the Mandela Effect”. On it, she collected shared memories that seemed to contradict the historical record. (The site is no longer online but, never fear, Broome has published a 15-volume anthology of these curious recollections.)
Mandela, of course, did not die in prison. On a recent trip to South Africa, I visited Robben Island, where he and many others were incarcerated in harsh conditions, to speak to former prisoners and former prison guards, and to wander around a city emblazoned with images of the smiling, genial, elderly statesman. How could it be that anyone remembers differently?
The truth is that our memories are less reliable than we tend to think. The cognitive psychologist Ulric Neisser vividly remembered where he was when he heard that the Japanese had launched a surprise attack on Pearl Harbor on December 7 1941. He was listening to a baseball game on the radio when the broadcast was interrupted by the breaking news, and he rushed upstairs to tell his mother. Only later did Neisser realise that his memory, no matter how vivid, must be wrong. There are no radio broadcasts of baseball in December.
On January 28 1986, the Challenger space shuttle exploded shortly after launch; a spectacular and highly memorable tragedy. The morning after, Neisser and his colleague Nicole Harsch asked a group of students to write down an account of how they learnt the news. A few years later, Neisser and Harsch went back to the same people and made the same requests. The memories were complete, vivid and, for a substantial minority of people, completely different from what they had written down a few hours after the event.
What’s stunning about these results is not that we forget. It’s that we remember, clearly, in detail and with great confidence, things that simply did not happen.
Tim Harford, “The detours on memory lane”, Tim Harford, 2024-06-20.
October 15, 2024
QotD: The Mandela Effect
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