Presentation : Toward a typology of activities

Last month, I was honored to present a paper (via Skype) to the Helsinki Summer School on Activity Theory and Formative Interventions. The presentation was based on an article that hadn't been accepted yet, so I've been sitting on it, but I've just been informed that the paper has been accepted with minor revisions. So here it is.

Bottom line, I've been trying to characterize different sorts of activities and particularly how hybrids of those types lead to internal contradictions. This is my attempt at a typology. See what you think!