from
The Free On-line Dictionary of Computing (8 July 2008)
Bloggs Family, the
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
DEC Telephone Directory. Compare {Mbogo, Dr. Fred}.