Requisite Variety

Some articles on requisite variety, variety:

Variety (cybernetics) - Overview - The Law of Requisite Variety
... Ashby states the Law as "variety can destroy variety" ... The Requisite Variety condition can be seen as a simple statement of a necessary dynamic equilibrium condition in information theory terms c.f ... Stafford Beer defines variety as "the total number of possible states of a system, or of an element of a system", c.f ...

Famous quotes containing the words variety and/or requisite:

    A third variety of drama ... begins as tragedy with scraps of fun in it ... and ends in comedy without mirth in it, the place of mirth being taken by a more or less bitter and critical irony.
    George Bernard Shaw (1856–1950)

    The first requisite of civilization ... is that of justice.
    Sigmund Freud (1856–1939)