Joseph Mazur's latest book, "Fluke: The Math and Myth of Coincidence", is now available. Beginning with a lively collection of coincidence stories, "Fluke" sorts them into categories, analyzes the likelihood of each, and explains the tools required for such analyses. Coincidences happens far more often than we think, mostly because we live in a larger-than-imagined world with over 7 billion people making decisions every second leading to an unimaginably vast number of dependent outcomes. It gives us a causality universe that is unimaginably vast and complex, a place where unlikely events happen simply because there are so many possibilities and so many of us available to experience them.