Hi Anna. Looking forward to meeting you at the meeting in Berkley. I'm intrigued by your description of "memory trace" in collaborative discourse. I am in the process of modifying my Adaptrode learning mechanism (memory traces in short- intermediate- and long term memory: http://faculty.washington.edu/gmobus/Adaptrode/causal_representation.html). I developed this in the context of biologically-inspired neural networks used in an adaptive robot (an animat) to work as a memory trace in my ConsensUs project (http://faculty.washington.edu/gmobus/ConsensUs.html).