Abstract

Gordon Pask developed not only a conversation theory, but also a (less well-known) interaction of actors theory, partly in response to demands during the time he worked in Amsterdam. The paper aims to clarify how this theory intended to minimise the effects of use on scientific results, while maximising the help of such results to improve on actions. This would facilitate empirical study of what changes user values, as well as the preferred design of (computer supported) support systems. Results include the material and communicative support of collective and social activities. Three examples are presented.