“六度空间”理论又称“六度分隔”理论，可以通俗的阐述为“你和任何一个陌生人之间所间隔的人不会超过六个人”，也就是说最多通过五个人你就能认识任何一个陌生人。-" Six Degrees of Separation"　theory known as " six degrees of separation"　theory, can be described as a popular " people between you and any stranger spaced no more than six people,"　that is up to you by five people will be able to recognize any stranger.