<p>Right now, <a href="https://stats.stackexchange.com/review/close/200570">this question</a> is marked for closing as a duplicate of <a href="https://stats.stackexchange.com/questions/296541/determining-statistical-probability-related-to-a-string-event-of-dates">this one</a>. Yet the titles and subjects are totally different at first glance - and someone searching for something similar will have little hope of finding this.</p>

<p>Of course, a little thought makes us realize both are about analyzing coincidences. But we don't have such a tag (at least, I could not find one) and neither of the two questions is really canonical.</p>

<p>Should we have some question such as "How can one analyze the probability of coincidences?" ?   Or should we just add a tag?</p>
