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:
“I’m not an overly ambitious person; I don’t feel like I have to excel.”
—Chris Evert (b. 1954)
“The hippopotamus is strong
And huge of head and broad of bustle;
The limbs on which he rolls along
Are big with hippopotomuscle.”
—Arthur Guiterman (1891–1943)
“She has not grown uncivil
As narrow natures would
And called the pleasures evil
Happier days thought good....”
—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)