Black Swan

I sometimes think I must go about in a bubble.  I recently read about something I had never heard of though it became a buzz phrase.  Black Swan Event.  It was a term made popular by a guy called Nassim Taleb who wrote a book called “The Black Swan” which spent close to a year on the New York best sellers list.
Black Swan was a term used in finance mostly to denote an event that happened which was totally unpredictable and extremely rare and had major implications (ie the global financial crisis).  In hindsight it is generally seen as predictable though no one predicted it.  In its original state it would refer to mostly negative implications.
The meaning of the term had to be altered after the discovery in Western Australia of Black Swans.  Originally it was felt they did not exist as only white swans were reported as being seen.
My reading referred to Black Swan moments as events in life that happen but are totally unpredicted and have major positive implications.
The example given was a lady taking the kids shopping.  In her mind the day was, get some things needed for the house and go home.  As it turned out she saw a lady obviously in distressed.  When asked, this person said she had been separated from her mum who did not speak English and had her stroller (she was holding a baby), phone and wallet.  The shopping lady spent the next couple of hours hunting for the mum, buying food to feed the baby and eventually finding the mum.
The time together led to the person being asked over for a bbq lunch and long story short the distressed lady ended up hosting a bbq and inviting lots of her friends.  Friendships were made by people who only met because someone chose to help out someone else.
I sorta like the premise here.  It is all about the seeming randomness of events.  I (rightly I think) plan my day, but unpredictable things happen.  Things that can change my life forever.  Bad things and good things.
What I like about the thought is that although I cannot plan for it, life can be so much more expansive than I imagine.  I can plan my day, but anything can happen.