Martin Gardner, 20th century mathematician, wrote a nice little essay, for The Scientific American, about coincidence. He claims, among other things, that the wonder is that there is not more coincidence than we notice... or rather, that there is a good deal more than we notice.
He makes a pretty effective argument by demonstration that co-incidences are just that: coincidence; and that deeper ('occult') meaning should not be read into them. I'm afraid that he is mostly right. <homonculus kicks open ear-drum door and pushes old belief system out where it falls and crashes to the floor/> I do still reserve the right, though, to suppose that some seeming coincidence is engineered by outside agency, and so is not coincidence at all. </slams ear-drum door shut>.
As it would be, having just written here on coincidence and omen here in these boards, I came across his book with his essay in a used bookstore looking for something else, entirely, or course, by coincidence.
Here are a couple of Garner links, I couldn't find his essay online. Lot to learn from the man. Remember, Skepticism is as important as open-mindedness.http://www.skepticblog.org/2010/05/25/l ... n-gardner/https://www.scientificamerican.com/arti ... nks-lesson