Use of procedural knowledge in an agent raises the questions of whether the agent can "know what it knows" and the issue of penetrability of the knowledge. Use of this knowledge may not preclude the agent from this form of meta-knowledge and it certainly does not imply cognitive impenetrability. That the agent can exhibit behavior that it knows what it knows is illustrated in Soar by the instance that explained its actions. Cognitive impenetrability is not implied because for any operator learned, new, improved operators can be learned along with preference rules that lead to the emergence of cognitive penetrability. The precise bits corresponding to the original operator are neither understood nor changed, but the behavior exhibited by the operator has been penetrated.
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