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Herbert Simon: Solution By Recognition and the Value of Mental Models

Herbert Simon describes the difference between experienced decision makers and novice ones in his autobiography Models of My Life.

In doing so, he highlights the value of mental models and collecting a repository of positive responses that can be called upon when needed.

One can train a man so that he has at his disposal a list or repertoire of the possible actions that could be taken under the circumstances…A person who is new at the game does not have immediately at his disposal a set of possible actions to consider, but has to construct them on the spot – a time- consuming and difficult mental task.

The decision maker of experience has at his disposal a checklist of things to watch out for before finally accepting a decision. A large part of the difference between the experienced decision maker and the novice in these situations is not any particular intangible like “judgment” or “intuition.” If one could open the lid, so to speak, and see what was in the head of the experienced decision-maker, one would find that he had at his disposal repertoires of possible actions; that he had checklists of things to think about before he acted; and that he had mechanisms in his mind to evoke these, and bring these to his conscious attention when the situations for decisions arose.

Most of what we do is to get people ready to act in situations of encounter consists of drilling in these lists into them sufficiently deeply so that they will be evoked quickly at the time of the decision.