You have just received a package from home, but you don't have a knife handy and assume you can't open the package. your roommate quickly offers you her house key to use to cut open the box. your roommate has overcome Functional Fixedness.
A roommate is a person with whom you share a room, dormitory, or other living facilities, except for family or romantic relationships. Similar terms are Dormmate, Suitemate, Housemate, or Flatmate ('flat': normal British English for flat). Roommate[1] is the term most commonly used in New Zealand to refer to renting a non-shared room in an apartment. Another similar term is share mate (in Australia and other Commonwealth countries sharehouses are often called sharehouses). A communal apartment is a household model in which a group of normally unrelated people lives together. In general, it refers to the case of living together in a rental property, not a property owned by a resident.
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