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Models in the Mind
Example of Orchestra Conductor

If you watch a professional conductor, he or she is conducting ahead of the actual music.  
This is because what is being conducted are the models in the minds of the musicians, not
the musicians directly.

When musicians practice long hours, they are forming a model of their hands, mouth and
instrument so that they can predict what will happen when they send signals to move certain
muscles.

Other Examples:
Awkward Teenage Years
Umpire's Bad Calls