博文
On Coincidences
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As an example.
Why Do We Always Seem to Run Into People Abroad?
According to details in this article we can run into a person we know while travelling abroad once in 25 years
on the average. I did - In Dublin Ireland during the years we travelled abraod almost every year 1961-2007.
One can make similar estimates if you are probability and mathematically inclined.
https://blog.sciencenet.cn/blog-1565-1458551.html
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