Its users scarcely noticed, for ARPANET’s functions not only continued but steadily improved.
The use of TCP/IP standards for computer networking is now global.
The invention of the mailing list followed naturally.
This was an ARPANET broadcasting technique in which an identical message could be sent automatically to large numbers of network subscribers.
ARPANET’s users had warped the computer-sharing network into a dedicated, high-speed, federally subsidized electronic postal service.
The main traffic was not long-distance computing, but news and personal messages.
As early as 1977, TCP/IP was being used by other networks to link to ARPANET.
ARPANET itself remained fairly tightly controlled, at least until 1983, when its military segment broke off and became MILNET. And ARPANET itself, though it was growing, became a smaller and smaller neighborhood amid the vastly growing constellation of other linked machines.
Discussing science fiction on the network was not work-related and was frowned upon by many ARPANET computer administrators, but this didn’t stop it from happening.And how would the network itself be commanded and controlled?Any central authority would be an obvious and immediate target for an enemy missile.RAND mulled over this grim puzzle in deep military secrecy, and arrived at a daring solution.In the first place, they would design a network with no central authority.