Why Are Computers So Stupid, and What Can Be Done About It? Palladium Lecture, NYU, Feb. 2006.
Commonsense Physical Reasoning Research presentation, Feb. 2006
Commonsense Reasoning and Science Research presentation, Feb. 2007
The Expressivity of Quantifying over Regions Computational Topology, Algebra and Geometry Seminar, March 20, 2007.
Commonsense Physical Reasoning: Boxes and Pitchers IBM, May 16, 2007
Commonsense Reasoning about Chemistry Experiments: Ontology and Representation
Commonsense Reasoning, June 2009.
Pre-2007 Powerpoint format
How does a Web Search Engine Work? CSplash, April 17, 2010.
Ontologies and Representations of Matter AAAI, July 14, 2010.
Metalogical Properties of First-Order Languages over Spatial Regions CUNY, October 8, 2010.
Qualitative Spatial Reasoning in Interpreting Text and Narrative. COSIT, September 14, 2011.
Why Are Computers So Stupid, and What Can Be Done About It? Science on Saturday, Princeton Plasma Physics Lab, March 3, 2012. Video