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Which limitation applies to shallow associational knowledge?

  • A.It can only be written by the domain expert and never by the knowledge engineer working alone
  • B.It cannot handle a fault it was never told about
  • C.It requires far more storage than an equivalent model of the underlying device would need
  • D.It is slow to apply

Answer: B

An association between symptom and cause carries no account of why the association holds, so an unanticipated fault produces either silence or a confident error. A causal model can reason about the novel case from first principles. Storage and speed favour the shallow representation, and authorship is unrelated. This is brittleness stated at the level of representation rather than behaviour. The shared properties explain why these belong to one family, and the differences explain why more than one exists.

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