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Doug Engelbart
Design in the 21st Century: A Coffee with Barry Katz (Part 3)
Posted on Saturday, May 17th
SM: Is that how they got the idea for the roller ball itself, or were they prototyping an existing concept? BK: The idea for the roller ball preceded them; they were just trying to figure out how to make it work. Back in the 1960s, when Doug Engelbart was working for SRI, he built this
