Thomas Hardy believed in "coincidence". Do you?
First, note for those of you that remember that undergraduate course in 19th Century English Literature...Thomas Hardy and friends. Thomas Hardy employed the notion of "coincidence" frequently in his novels. "Coincidence", I suppose, can be lumped with "chance, happenstance", or even "serendipity". It does occur with a mix of positive and negative results. Such is life.
Thomas Hardy's Philosophy of Chance and Change in The Return of the Native