On a fishing excursion, Hugo realizes he has mistakenly packed his mother's sewing box instead of his tackle box. He wants to fish, but returns home, instead, because he does not have any line or hooks. Hugo's failure to realize that sewing thread can be used as fishing line and that a bent needle can be used as a hook is an example of

functional fixedness

Explanation:

This is a good example of functional fixedness. Functional fixedness is a form of cognitive bias that would make an individual not see beyond the uses of something or an object as he or she used to know. They would only see and know the use of the object in a particular way. This is what happened with Hugo, even though he has a thread and needle that can serve the purposes of a line and hook, he doesn't realize this because he only knows them to be used for sewing.

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