The way in which we design is oriented on the biological world of the development of species; an individual of a species consists of a complex cohesion of levels. Individuals are developed due to the mutation of variations on the genetic level, which can result in 'deviations' (improvements or deteriorations) on a phenotypical level. Due to the change of the living environment (the extended phentoype), the deviation suddenly implicates an improvement or a degredation.