Workstations and Timeshare Systems (Score 3, Interesting)

In the early days of the Internet (say, pre-1975), when it consisted of the Arpanet and a few linked networks, the goal of ARPA's funding was to tie together users of timeshare computers. In the last quarter of the twentieth century the Internet has morphed into a vast network of LANs, servers, and personal workstations. Timesharing computers and their users have dropped out of the picture.

You and Kahn were doing your early work on TCP in the same years that the first workstations (at Xerox Parc, for example) were being developed. I'd like to know, if you can remember, when you first began to appreciate the magnitude of this change in the internet user base, and whether this change had any affect on your TCP/IP design work in the late 70s.