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:
“Total physical and mental inertia are highly agreeable, much more so than we allow ourselves to imagine. A beach not only permits such inertia but enforces it, thus neatly eliminating all problems of guilt. It is now the only place in our overly active world that does.”
—John Kenneth Galbraith (b. 1908)
“The bread-winner must toil as in the fruitless effort of a troubled dream while the expenditure of an uneducated wife discounts the income in the lack of understanding to discern the broad possibilities of an intelligent economy.”
—Anna Eugenia Morgan (1845–1909)
““There’s not a man or woman
Born under the skies
Dare match in learning with us two,
And all day long we have found
There’s not a thing but love can make
The world a narrow pound.””
—William Butler Yeats (1865–1939)
“What I do not like about our definitions of genius is that there is in them nothing of the day of judgment, nothing of resounding through eternity and nothing of the footsteps of the Almighty.”
—G.C. (Georg Christoph)