Im searching for information on an experiment where it was determined how many hops it would take for a message to theoretically reach everyone on Earth (i.e. 8 billion). So if every reciever would forward the messae to X contacts, it would take Y hops to reach the earths population. I only can remember that Y was suprisingly low, and X was not high either.
Can any help me with the name of the experiment or any more information?
Thanks