From 1979 to 1982, he was a research associate in the Department of Computing Science at the Newcastle University, before joining SRI International in Menlo Park, California in 1983.
He was a research associate in the Department of Computing Science at the Newcastle University. This was from 1979 to 1982. This was before. He was joining SRI International in Menlo Park, California in 1983. This was from 1979 to 1982.