Second-order cybernetics, also known as the cybernetics of cybernetics, is the recursive application of cybernetics to itself and the practice of cybernetics according to such a critique. It was developed between approximately 1968 and 1975 by Margaret Mead, Heinz von Foerster and others. Von Foerster referred to it as the cybernetics of "observing systems" whereas first order cybernetics is that of "observed systems". It is sometimes referred to as the "new cybernetics", the term preferred by Gordon Pask, and is closely allied to radical constructivism, which was developed around the same time by Ernst von Glasersfeld. While it is sometimes considered a radical break from the earlier concerns of cybernetics, there is much continuity with previous work and it can be thought of as the compl