19 March 2008


a sociological, economic, or political subdivision of society

When young science-fiction fans get to the study of geometry, they are often bothered by how the use of the word “sector” in science-fiction doesn’t match the technical use of the term in geometry.

In fact, people generally seem to have a problem that when they learn the technical meaning of a term in a particular field of study, they have trouble with the plain use of the term.

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