. ficethe description of .. . simple physical pictures."' A A 21. Ibid., p. 70. acerepresent relations for . . . for objective description.fi A A n Von Foerster, op. cit. iceA measure of . b A A 32 Bohr, op. cit., pp. 78-79. Actin return for . . . object-subject separation.fi A A 24. Von Focrstcr, op. cit

ing his trilogy in 1966, von Foerster led a movement that began in 1968 to develop ace2nd order cybemetics,a or ficethe cybernetics of cybemetics.a Von Foerster wrote in 1973: a brain is required to write a theory of a brain. From this follows that a theory of the brain, that has any aspirations for complet