Fallacies of Definition - Overly Broad or Narrow Definitions

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 broad masses of a population are more amenable to the appeal of rhetoric than to any other force.
    Adolf Hitler (1889–1945)

    When I say artist I don’t mean in the narrow sense of the word—but the man who is building things—creating molding the earth—whether it be the plains of the west—or the iron ore of Penn. It’s all a big game of construction—some with a brush—some with a shovel—some choose a pen.
    Jackson Pollock (1912–1956)

    The loosening, for some people, of rigid role definitions for men and women has shown that dads can be great at calming babies—if they take the time and make the effort to learn how. It’s that time and effort that not only teaches the dad how to calm the babies, but also turns him into a parent, just as the time and effort the mother puts into the babies turns her into a parent.
    Pamela Patrick Novotny (20th century)