The value of a broadcast network is almost universally agreed to be proportional to the
number of users. This rule is called Sarno®’s Law. For general communication networks,
in which users can freely interact with each other, it has become widely accepted that
Metcalfe’s Law applies, and value is proportional to the square of the number of users.
This \law” (which is just a general rule-of-thumb, not a physical law) has attained a
su±ciently exalted status that in a recent article it was classed with Moore’s Law as one of
the ¯ve basic \rule-of-thumb ‘laws’ [that] have stood out” and passed the test of time.
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Tags: Computer, estimate for the value, interconnection, Internet, Metcalfe's Law, Network, refutation