What are cognitive tools and how many of them are there?

This seminar began by trying to give some adequate notion of what cognitive tools are, and broached a number of problems that the concept raises. It then explored the kinds of cognitive tools that have been a staple of the IERG's work, debating in what sense these were examples of cognitive tools and raising issues about how we are to classify the range of tools, from oral language or literacy to much smaller scale "tools."  The seminar was introduced by Kieran Egan, and you can read his introductory materials here.