Cambridge Coincidences Collection

As of the 23rd May 2022 this website is archived and will receive no further updates.

understandinguncertainty.org was produced by the Winton programme for the public understanding of risk based in the Statistical Laboratory in the University of Cambridge. The aim was to help improve the way that uncertainty and risk are discussed in society, and show how probability and statistics can be both useful and entertaining.

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Well I Never!

Professor David Spiegelhalter of Cambridge University wants to know about your coincidences!

Second hand jacket

I went into an army and navy store in Leicester in 1969 to buy a jacket. I was browsing a rail of surplus and secondhand clothes and picked out an American combat jacket. I paid my 22s 6d at the till and left. After wearing it for a few weeks I decided it needed a wash. Inside the jacket was a hand written name and address. Bill Marshall, 82 Airborne, Soper Street, Long Island, New York. This guy was my late uncle who had been a GI and had met and married my father's sister, and after the war had returned to the Marshall family home.

Lucky 13

In the 1980s I was flying off with 12 other friends for a lads' holiday in Spain. As a nervous flier and fairly superstitious I was uneasy about travelling on Friday 13th. On check in I was given seat 13F. The departure board then showed our flight leaving from gate 13. As far as probability is concerned all fairly routine, but it did prompt many of my travelling companions to joke that I was/ we were all doomed. It then began to dawn on me that this was my 13th trip abroad and worryingly my 13th flight as 6 of my previous European holidays were via ferry crossings.

Odd Cemetery Coincidence

In the town where I work, I walk around a local cemetery's paved roadway at lunchtime, for exercise. It's like a large park, pretty much safe from traffic except for occasional gravesite visitor's traffic, and I like to pass the time by reading names and dates on headstones, and wondering what their stories were, especially the ones who died young. I randomly stopped at one headstone, spying it from about three rows back from the path, as I was passing by. It belonged to a young-ish couple, who had died a few short years apart from each other, both in their 50's. I had not known either one of these two people personally. Never heard of them. I just glanced at their headstone, and noticed the dates were close together. I wondered what each one had passed from, at such an early age, and what their story might have been... ? When I got home, I looked up their obituaries online. The husband first .. had died in hospice from some unnamed illness. The wife, died a couple of years later or so, also after some sort of illness. Then I read her survivors' names......

Family birthdays

Just listened to a BBC radio4 programme about coincidences where they interviewed you. So, wanted to ask the probability of this: I have three sisters and two brothers. My birthday is 12 th June 1967, Ranchi, India, but I moved to England with my parents and five siblings in 1976.My eldest sister who was married with a 9 month old daughter stayed on in India. My niece, the youngest ( of two) daughters of my eldest sister was born on 12 th June 1980 in Ranchi, India. Then the eldest child of my youngest brother was born on 12th June 2000 in London, England Then my eldest brothers son was also born on 12th June about five years later in San Diego as my brother had moved to live there. So , out of 11 nephews and nieces from my 4 siblings who have children , three share my birthday ! Would be good to know the probability of this happening. Prita Jha

Driving license

Recently found out that my boyfriend of 3 years passed his driving test on my birthday and I passed my driving test on his birthday, both long before we met.

Plane crash

I grew up near Biggin Hill and developed a strong feeling that I one day I would see a plane crash – NB not a fear of being in a plane crash. As I got older even though I had moved away from Biggin Hill, the feeling got stronger and stronger until by my early 40s every time I saw or heard a plane doing anything unusual I would think ‘is this the one?’. I knew exactly what it would feel like watching in horror as a plane fell out of the sky. One evening in January in the late 1990s I was driving my teenage son to friends in the next village when suddenly a military plane appeared, skimming over a copse of trees, so low my son and I could see the pilot - and we both instinctively ducked.. I slammed on the brakes thinking it was about to crash onto the road in front of us. My son was screaming. At this point a huge amount of black smoke came out of the back of the plane and it gained just enough height to clear the trees on the opposite side of the road and disappeared. My son and I were extremely shaken . I had the very strong feeling that it was the plane I was ‘destined’ to see crash and I kept saying that an RAF plane was ‘ meant ‘ to crash in our village.

Smashing face!

In Feb 2017 I looked in the mirror and, uncharacteristically, felt that my mouth was looking good for my age and that the Cupid's bow and upper lip were in particularly good shape. I decided to buy new lipstick next day. While walking to my car with the new lipstick I tripped over a pothole and fell flat on my face. The only damage was to my top lip - which despite being repaired by an excellent maxillo- facial surgeon is now permanently disfigured - the cupid's bow I was so proud of has been replaced by a two pronged scar. I had never congratulated myself on my face before and although a year previously I had fallen and broken my nose this is not something I do regularly. I know Freud says there is no such thing as an accident and would no doubt say that I had deliberately sabotaged myself by smashing my face into the tarmac but just to be on the safe side. I now refuse to think positively about any part of my body

The triple tea dance coincidence

The-dansants ?? In 1974 I was working in London in my gap year. One evening while walking past the Aldwych Hotel to Charing Cross I was approached by a young sandy-haired man with a clip board, He said he worked for one of the independent TV companies and was on the look out for 'interesting looking people' to invite to one of the regular tea- dances they held. He told me he wanted me to go to the next one and where and when it was but I didn't listen as I didn't believe him and even if he was genuine I had no intention of going to a 'tea-dance' for 'interesting people'. I went off to University in Aberystwyth and then got a job working for a small independent publisher in Cambridge. One afternoon In 1979 I decided that we had so much outgoing post I would, very unusually, take it myself to the Post Office in Trinity street - literally a few steps round the corner from All Saints passage where I worked.

The Hakka hat coincidence

Invited to what promised to be boring dinner party in tiny hamlet in backwoods of N Notts with only 8 other guests, I decided to liven things up by wearing one of the collection of rare/ esoteric hats my husband brought back from his regular trips to obscure places. I had never worn any of these hats outside the house and my hat of choice for domestic jollifications was either an Uzbek shepherd's hat or a Turkmenistan police man's hat. However on this occasion I chose a hat I had never put on before a large traditional hat worn by members of the Chinese Hakka tribe. I walked in to the dinner party wearing the hat to find that one of the guests – a friend of friend unknown to the hosts or to me - speechless with astonishment. He was a Hakka - and had never seen one of the hats outside China. Odds of putting on esoteric traditional Chinese headgear for the first time then walking into a kitchen in a tiny backwoods hamlet in the UK and meeting a member of the specific Chinese group who are the unique wearers of that hat???.

Is this unusual?

Coincidences happen all the time in my life - so much so that I notice if none occur for more than a ciuple of days. II now realise I should try to keep a record - but it willl be time consuming. E.g yesterday afternoon I talked to a friend about how much I regretted not buying a property in Cambridge a few years ago. I then ordered some tile samples on-line. As I was paying I saw that the company's business address was Jesus Lane in Cambridge - where I used to live. I then picked up a novel I had begun at Christmas but not looked at since the beginning of March when my 28 year old nephew tragically had a cardiac arrest in the gym and died. The novel is about a group of people who are staying at a hotel - i.e. not a 'medical' story. As I picked it up I thought 'the last time I read this J. (my nephew) was alive and well . I started to cry and said out loud ' J. why did you die ? I looked down where the book had fallen open - much further on than I had read. The first thing I saw In the middle of the page, on a separate line from the previous diaogue, were the words 'cardiac arrest'.

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