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:
“Many parents worry that they will reinforce a fear by being overly sympathetic. It helps to know that when children are permitted to avoid an animal or an object that frightens them, they tend to overcome a fear sooner than if parents push them to confront it.”
—Cathy Rindner Tempelsman (20th century)
“Lepidus. What manner o’ thing is your crocodile?
Antony. It is shaped, sir, like itself, and it is as broad as it hath breadth.”
—William Shakespeare (1564–1616)
“Less than five hundred souls inhabit the three quaint streets and the few narrow by-lanes and scattered farmsteads that constitute this small, decaying watering-place which may, indeed, be called a “backwater of life” without disrespect to its natives who possess, to this day, a salty individuality of their own.”
—Dylan Thomas (1914–1953)
“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)