I remember first watching John Guare's play Six Degrees Of Separation (now a film with Stockard Channing and Sidney Poitier) and discovering the the ory behind the title.
If you do not know it, let me explain. The idea, as I understand, is that each person on Earth is separated from every other human by only six people.
In other words, I don't know Madonna, but, in fact, she is removed from me by only one degree because a former colleague, a music writer, does know her.
Let's take as an extreme example a bushman in deepest Africa. Well, I have a friend who has a friend who works for a relief organisation. That friend knows someone working on a project in Africa in the very village where our bushman lives and she knows him well - just three degrees of separation.
The theory is that it takes only six moves before we are all connected.
What I am leading to is how careful you have to be in this world - you never know who knows whom.