One of the mysteries of the English language finally explained.
A principle which states that the usefulness or value of a network is proportional to the square of the number of its users.
1990s. From the genitive of the name of Robert M. Metcalfe (b. 1946), U.S. inventor of the Ethernet, who first formulated the law + law.
Metcalfe's law/ˈmɛtkɑːfs lɔː/
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