Overly Broad or Narrow Definitions
A definition is no good if it defines its subject with overly wide or narrow parameters. For example, "a shape with four sides of equal length" is not a good definition for 'square'. Why? Not only squares have four sides of equal length; rhombi do as well. This is proven by identifying not only the term being defined, but also the conditions in the definition. Likewise, defining a 'rectangle' as "a shape with four perpendicular sides of equal length" is not valid because it is too narrow.
Read more about this topic: Fallacies Of Definition
Famous quotes containing the words overly, broad, narrow and/or definitions:
“Do not get a name as overly lavish or too inhospitable.”
—Hesiod (c. 8th century B.C.)
“In America the taint of sectarianism lies broad upon the land. Not content with acknowledging the supremacy as the Diety, and with erecting temples in his honor, where all can bow down with reverence, the pride and vanity of human reason enter into and pollute our worship, and the houses that should be of God and for God, alone, where he is to be honored with submissive faith, are too often merely schools of metaphysical and useless distinctions. The nation is sectarian, rather than Christian.”
—James Fenimore Cooper (1789–1851)
“[W]e are all guilty in some Measure of the same narrow way of Thinking ... when we fancy the Customs, Dresses, and Manners of other Countries are ridiculous and extravagant, if they do not resemble those of our own.”
—Joseph Addison (1672–1719)
“Lord Byron is an exceedingly interesting person, and as such is it not to be regretted that he is a slave to the vilest and most vulgar prejudices, and as mad as the winds?
There have been many definitions of beauty in art. What is it? Beauty is what the untrained eyes consider abominable.”
—Edmond De Goncourt (1822–1896)