Six Degrees of Separation
Six degrees of separation is the theory that anyone on the planet can be connected to any other person on the planet through a chain of acquaintances that has no more than six intermediaries.
Basically, If you know 44 people, and those 44 people know a different 44 people, and those 44 people know a further unrelated 44 people, continuing six times, 44^6, you would know 7.26 billion people within 6 degrees of separation. That’s larger than the population of the world.
And consider, people have at least hundreds, if not thousands of social media connections.