Everything in this world is a very very long chain reaction. The term people often coin is the word butterfly effect, the theory that something as small as flap of butterflies wings could trigger a hurricane elsewhere.
An example I would give is you read a book and it talks about a place that is nice to go on holiday. You got the book from a charity shop because a coloured glass was placed in the window and it caught your attention, you decide to get the mystery book instead of the glass.
You go on holiday to the place mentioned in the book and you see a bakery that sells quiche as an extra line and think it is a good idea and that causes you to set up your own bakery. Then two customers meet in your bakery and they start a relationship and have a family and children.
The question would be, if the charity shop keeper decided not to put the coloured glass in the shop window, would all the other events not happen, do they hinge on that one event?
