A Small World....

Have you ever thought about how small this world is?
Sometimes the thought would cross my mind.. but I never really thought about it. Even when I am out with friends and people would talk about how random it is that we all know a certain person or whatever I did not see this as being very random. The number of people the same age, same interests, same social class, and same mentality is not that high. The chances of meeting eachother is very high...
But today something weird happened. I was out with a friend. We met through very random circumstances. As we are talking we realized that we both know this one person...
The weird part is:
I know this person through family relations from about 12 or 13 years ago in America.
He knows this person from school and are best friends.
I have recently been talking to this person and made plans to go on outings and trips but always had to cancel.
He was going on same outings and trips but also cancelled.
We have both been talking about this shared friend a lot in our conversations... never mentioning his name.
Then.. we realized that we were both talking about this same person...
I am sure that all of you are confused.. maybe at some point I can be more eloquent and explain better...
But now I really believe that this is a small world we live in....