Abstract

- Biological and cognitive systems have the capa- bility of developing new goals during phylogenesis of species or during ontogenesis of single individuals. On the other hand, current artificial cognitive systems focus on how achieving a given fixed set of hard-wired goals. They search an optimal solution of a problem, given a set of goals and a set of optimiza- tion criteria. They look for “how” to achieve a given goal. Natural agents develop new goals in order to cope with par- tially unknown and ever changing environment. They must find “what” they want to achieve and not only “how”. The development of new goals on the basis of the interaction with the environment is here defined the “what” problem. The de- velopment of a collection of goals permits to redefine the con- cept of Umwelt in what could be considered the teleological Umwelt of an agent. The objective of this paper is twofold: i) to outline the “what” problem and ii) to describe a robotic archi- tecture capable of addressing it.