In this article we report our study of objectivation in the conversation of a design team. Objectivation is the practical work in which groups engage to produce social objects that facilitate orderly collaboration. We observed how design team members came to agree on specific details about an educational simulation they were designing, as they treated simulation features like independent social facts that could be affected by and have effects on other simulation features, and that had discrete benefits that made them an asset within the product. In our report we describe patterns of objectivation in their conversation that produced these results. We conclude by discussing how our study relates to, and enriches, the findings provided by prior design research.