Metcalfe's law: https://en.wikipedia.org/wiki/Metcalfe%27s_law https://en.wikipedia.org/wiki/Metcalfe%27s_law I believe the best estimate of the number of Inte

Metcalfe's law: https://en.wikipedia.org/wiki/Metcalfe%27s_law https://en.wikipedia.org/wiki/Metcalfe%27s_law I believe the best estimate of the number of Internet-connected users in 1990 was 1 million. How many terminals were connected to PLATO?