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:
“We Americans are supposed to be overly concerned about the child. But actually the intelligent care of children in our society is balanced by a crass indifference to the helplessness of infancy and youth. Cruelty to children has become more widespread but less noticed in the general unrest, the constant migration, the family disintegration, and the other manifestations of a civilization that has been torn away from its original moorings.”
—Agnes E. Meyer (1887–1970)
“We must leave our pets at home, when we go into the street, and meet men on broad grounds of good meaning and good sense.”
—Ralph Waldo Emerson (1803–1882)
“Don’t you see that the whole aim of Newspeak is to narrow the range of thought? In the end we shall make thoughtcrime literally impossible, because there will be no words in which to express it.”
—George Orwell (1903–1950)
“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)