Check your intuition: The birthday problem - David Knuffke
Why the open web links it
Explains the counterintuitive birthday problem and the probability of shared birthdays in small groups.
Linked by 9 independent sites, 4 of them widely read in the 2026-10 crawl of the open web, including aljazeera.net, wolfram.com, unt.edu, naked-science.ru, westside66.org.