Metcalfe's law
/ˈmɛtkɑːfs lɔː/Telecommunications and Computing
noun
A principle which states that the usefulness or value of a network is proportional to the square of the number of its users.
Origin
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.