The idea that any two people on Facebook can be connected through no more than 4 mutual friendships.
The average person has 130 friends on Facebook, meaning that they have on average 130² friends of friends, 130³ friends of friends of friends, and so on. In six degrees that encompasses 130^5 people. This is 3.7 billion people, more than the entire global Facebook community.
Jane is friends with Mark
who is friends with Karisa
who is friends with Oleshia
who is friends with Chenwei
who is friends with 손재호
Separation of Church and State is an ideology protecting religious freedom by ensuring government does not interfere to favor or disfavor private religious establishments so long as they practice without violating another's individual rights. The clause also protects from churches and other religious organizations interfering with government practices in an attempt to remove religious freedom so as to favor their beliefs. This clause proposes a metaphorical wall between government and religious establishments, unlike the one-way street idea proposed by fanatical religious theocrats.
Wiccan: You can't limit my freedom to worship in peace. We have separation of Church and State.
Radical Fundamentalist: No you don't! That clause represents a one-way street. Government is not to interfere with churches but churches can control the government and limit the rights of non-believers!