Week three sychronicity

What evidence can I find for sychronicity:
Just examples from my own life that have been to large to ignore. One year I sent a small cloth angel to my youngest sister. We were very close and often bought the same thing for another person without awareness of what each of us had done. This particular year a cloth angel arrived for me and it was the exact one that I had sent to her to Christmas that year. So we sent each other the identical angel - brand and everything to each other that year.
Another dong experience or one that gets your attention happened in a remote camping area in Minnesota on a lake that was very difficult to access. While we were on the lake, I noticed a series of arrows carved into the stones at the water's edge. It was a breathtaking experience. When we got back to camp and were talking with another woman about it, she said she noticed it at about the same moment in time. What it means, I have no idea, but it felt like a synchronistic experience that we had shared on some kind of sacred space.
I do think it took someone like Jung to start researching it to put validity to it. Otherwise we wouldn't have given it such credence and start researching how unlikely events happen at the same time.
Connectivity - how to explain? Well the law of 6 degrees of separation comes to mind. We can be talking about someone and find out without too much effort that this person knows someone who knows someone that we know. Or something like that. It happens with such regularity and so it is just something that we come to accept is true. An interesting thing is that computers can actually validate this connection between people. There was an experiment where letters were sent out to people and were to be passed on to others to see where they ended up or how many people were connected with the exchange. It turned out many in the experiment ended up to have a 5.6 connection that validated the 6 degrees of separation theory. I find it often happens when I am thinking about someone a lot - even if I haven't had contact with them for a while, either of us will call the other person and often hear - I have been thinking about you so much lately. Seems our connects are there even if we cannot at this point prove it - we know what we know.