When Joe arrives at the library, he can choose from any of several strategies that might help him find the book he needs. He could examine all the books on every shelf, and be certain that he would eventually find the book he wants, but this strategy would take too long. Joe decides instead to ask a librarian to direct him to the appropriate section of the library. Joe is using

A heuristic

Explanation:

Heuristic can be likened to a mental shortcut aimed at easing the cognitive load of making a choice or decision. It is expressed in trial and error, profiling, rule of thumb, an educated guess and common sense.

It is a rule or method that helps you solve problems faster than you would if you did all the colouring.

Joe asking the Librarian to help him is typical of a heuristic approach.

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