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17 Nov 2000: This weakness has been noted by a number of people working with qualitative reasoning systems [Recent qualitative reasoning literature describes systems which reason about the behaviour of mechanisms, rather than circuits.

17 Nov 2000: One of the main goals of the RAPT project was that assemblies be described in terms that are natural to people.

2 Oct 2000: People. Computer Laboratory. Microsoft Research Cambridge.

17 Nov 2000: The use of the term qualitative'' here implied mainly that the level of detail in the description is similar to that used by people - the system did not carry out qualitative

17 Nov 2000: mechanics. Several people had previously worked on systems which could solve problems at the level of high school physics'', but de Kleer was the first to use qualitative methods in an

17 Nov 2000: A framework which could direct either of these strategies could also include further strategies, such as rotation, wiggling into place, or other motion strategies regularly used by people.

17 Nov 2000: Although the representation made it easier for a computer program to reason about object interaction, it is not necessarily a good representation for people to deal with (as would be necessary

17 Nov 2000: Likewise, the description of shape seems natural to people - consider the following extended polygon boundary description of a light bulb: Most of this shape is a circular curve, turning through about

17 Nov 2000: This is one of the disadvantages of constructive solid geometry - although it is easy for people to define a complex shape using CSG, it is not so easy to take a

17 Nov 2000: People, however, do not store large amounts of information that is later filtered - they store a coarse description as a first impression'', and collect more detail if necessary by focussing their