Using Six degrees of Separation
Figure 6.9 billion,
A) How many messages are passed through before all 6.9 billion people are informed?
B) How many were informed during the last round i.e. the round that included the 6.9th bil person.
C) What are the chances a person will receive the info twice before the 6.9th bil person receive it?
D) And the 6.9 Billionth person, not knowing he/she is the last person, continues to pass the message, still under Six degrees of Separation…How many message passes will be needed (minimum possible) before the original 117, 694 millionth person gets to hear it the second time?
For D) Taking that the message passes are at random with NO planned point of contact, i.e. ‘coincidence’ in the real world.