Statistical Probability of Love at First Sight

Who would have guessed that four minutes could change everything?Imagine if she hadn't fogotten the book. Or if there hadn't been traffic on the expressway. Or if she hadn't fumbled the coins for the toll. What if she'd run just that little bit faster and caught the flight she was supposed to be on. Would it have been something else - the weather over the atlantic or a fault with the plane? Hadley...