''In 2018, at the age of 83, Dave moved to Japan to become Distinguished Professor at Keio University and Co-Director of the Keio Cyber Civilization Research Center (CCRC). He loved teaching, and taught his final class on January 22, 2026.

At CCRC, one of his most enjoyable activities was co-hosting the IP-Asia online gathering, which has met every Monday for more than five years and has addressed many aspects of the impact of technology on civilization.''

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