Some articles on requisite variety, 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 (18561950)
“The first requisite of civilization ... is that of justice.”
—Sigmund Freud (18561939)