You may have heard of the concept of “six degrees of separation”. Made popular by a movie and a parlor game, it says that everyone in the world can be connected by at most six degrees of separation. That is, I would know someone who knows someone who knows someone, ect. It claims it would take only six such connections to unite everyone in the world. Think about it- what would it take to connect you to, say, the Pope? My guess is that you know someone who knows a priest who knows a Cardinal who then knows the Pope. And so on.