Love this topic.
My folks lived in the same house since 1935. They raised us 3 girls there. I got married in 1964 and eventually moved about 40 miles west to another town. Discovered youngest daughter's best friends father went to school with my sister. Her other best friend's mother was one of my best friends in high school. (Her mom had died very young of breast cancer and I lost track of her husband).
When my mom had me, she shared the hospital room with another lady who lived 2 blocks away. The other lady's son married my sister-in-law.
Was good friends with a man from work and our families would get together often. When his mother died, of course, I went to the funeral. Was surprised to see a good friend/neighbor at the funeral. Her mom and the deceased were sisters.
My youngest son and his best bud were both Cub Scouts. So his friends mom and I decided to be den mothers. I didn't realize for many years that I worked with her mom (different last names). My husband played basketball in a city recreation league and would you believe it, he played basketball with her brother (another different last name).
My first office mate and I had the same names, spelled the same. My second office mate and I shared the same birthday.
Took a second job (to support my quilting habit) at Hancock Fabric's. Never knew that the manager's best friend was my cousin.
I could go on and on. My life is so full of 'coincidences' that it never ceases to amaze me. What is that saying about, "6 degrees of separation"? It is spooky sometimes.
Six degrees of separation (also referred to as the "Human Web") refers to the idea that everyone is on average approximately six steps away from any other person on Earth, so that a chain of, "a friend of a friend" statements can be made, on average, to connect any two people in six steps or fewer.