TECHNOLOGY
The Xerox Photocopier Help System
The early-1980s expert system embedded in Xerox photocopiers that Suchman's PARC research used to demolish the planning paradigm in AI — the canonical case of a machine that assumed users had plans it could support.
The Xerox photocopier help system was an early expert-system interface designed to guide users through complex copying procedures by inferring their goals and offering step-by-step instructions. Built on the assumption that users have explicit plans the machine can recognize and support, the system became the unintended empirical site for Suchman's 1987 demolition of the planning paradigm in AI. Her video studies of pairs of users attempting double-sided copies revealed that users did not have plans in the system's sense — they had vague intentions, partial understandings, and interpretive practices the machine could not anticipate. The resulting analysis in Plans and Situated Actions transformed human-computer interaction and remains the structural model for thinking about how AI interfaces misunderstand their users.
In The You On AI Field Guide
The help system was developed at Xerox PARC during the early 1980s as part of a broader effort to make photocopiers more usable. Xerox's market advantage depended