“when it comes to meeting people professionally, three degrees of separation is what matters…
Here’s where the caveat to the Six Degrees of Separation theory comes in. Academically, the theory is correct, but when it comes to meeting people who can help you professionally, three degrees of separation is what matters.
Three degrees is the magic number because when you’re introduced to a second- or third-degree connection, at least one person in an introduction chain personally knows the origin or target person.”
by Reid Hoffman for LinkedIn