Here is an interview with me about my understanding of language complexity. The interview is by Geoffrey Sampson, David Gil, and Peter Trudgill, as the final chapter in their forthcoming book, Language Complexity as an Evolving Variable, to appear from Oxford University Press.
Here is a powerpoint from a presentation in October 2009 at Columbia University on Language as a Cultural Tool.
Here is the printout for a powerpoint of my plenary lecture: Cognitive Fire: Towards a practice of Ethnogrammar, for the Deutsche Gesellschaft für Sprachwissenschaft (DGfS), Humboldt-Universität zu Berlin, February 23–26, 2010.