  In this paper we expose the theoretical background underlying our current
research. This consists in the development of behaviour-based knowledge
systems, for closing the gaps between behaviour-based and knowledge-based
systems, and also between the understandings of the phenomena they model. We
expose the requirements and stages for developing behaviour-based knowledge
systems and discuss their limits. We believe that these are necessary
conditions for the development of higher order cognitive capacities, in
artificial and natural cognitive systems.
