 The paradigm gave researchers license to study isolated problems and find solutions that were both <unk> and useful . It provided a common language to describe problems and share their solutions with each other , and with other fields that also used concepts of abstract agents , like economics and control theory . It was hoped that a complete agent architecture ( like Newell 's <unk> ) would one day allow researchers to build more versatile and intelligent systems out of interacting intelligent agents . 
