Exhibit 2.4
1987The second AI winter
Expert systems prove expensive to maintain and brittle when faced with exceptions. At the same time, the market for specialised AI computers collapses.

Why it is in the museum
Progress was not continuous. Periods of great expectations were followed by technical limits, disappointment and cuts in funding.
What supports this exhibit
Historical synthesis
The commercial downturn of the late 1980s and the maintenance problems of rule-based systems.
Main source: Historical literature on expert systems and the Lisp machine market.
The source is listed here, but no direct link is currently available in the register.
What to keep in mind: A synthesis of multiple sources rather than a single event.
Ask the exhibit
This small guide uses only the information documented on this exhibit page. If your question goes beyond that evidence, it will say so instead of inventing an answer.
Start with one of the suggested questions above, or type your own.