· Co-Founder and President, FrameLab Communications2018–
· Professor Emeritus of Linguistics and Cognitive Science, University of California, Berkeley1972–2016
· Associate Professor, University of Michigan1969–1972
· Research Fellow and Lecturer, Harvard University1965–1969
· PhD in Linguistics, Indiana University Bloomington1962–1965
· SB in Mathematics and English Literature, Massachusetts Institute of Technology (MIT)1958–1962
· Senior Researcher, Artificial Intelligence, International Computer Science Institute (ICSI)