%0 Book Section %1 forbus1988qualitative %A Forbus, Kenneth D. %B Exploring Artificial Intelligence %C San Francisco, California %D 1988 %I Morgan-Kaufmann Publishers, Inc. %K ai artificial intelligence physics qualitative %P 239--296 %T Qualitative Physics: Past, Present, and Future %X Qualitative physics is concerned with representing and reasoning about the physical world. The goal of qualitative physics is to capture both the common-sense knowledge of the person on the street and the tacit knowledge underlying the quantitative knowledge used by engineers and scientists. The area is now a little over ten years old, which, at least measured in the span of AI, is a long time. So it makes sense to step back and try to systematize the work in the field and describe the current state of the art. %& 7