bloggs family

Bloggs Family
 n.

   An imaginary family consisting of Fred and Mary Bloggs and their
   children. Used as a standard example in knowledge representation to
   show the difference between extensional and intensional objects. For
   example, every occurrence of "Fred Bloggs" is the same unique person,
   whereas occurrences of "person" may refer to different people. Members
   of the Bloggs family have been known to pop up in bizarre places such
   as the old {DEC} Telephone Directory. Compare {Dr. Fred Mbogo}; {J.
   Random Hacker}; {Fred Foobar}.