Describes science educators trying to effect systemic change as actors in a cultural field struggling to change it. Uses a conversational hermeneutic analysis of autobiographical writings to examine some of the salient features of bringing about change in science education. (Contains 35 references.) (Author/WRM)

Information processing models do not account for much of human competence in everyday scientific and lay contexts. Situated cognition models account better for competence in widely differing situations. In situated cognition models, the purpose of science education must be reconceived as preparing citizens to participate in public enactments of…