The basic law- in all fields of creation workers are striving today to find purely functional solutions of a technological-biological kind: that is, to build upon each piece of work solely from the elements which are required for its function. But function means here not a pure mechanical service. It includes also the psychological, social, and economic conditions of a given period. It might be better to use the term "organic (functional) design." Such design must even serve functions which could not be forseen during the process of designing.