In this 2010 conversation hosted by bloggingheads.tv, Eliezer Yudkowsky and Massimo Pigliucci attempt to unpack the fundamental assumptions involved in determining the plausability of a technological singularity.
A transcript of the conversation is now available here, thanks to Ethan Dickinson and Patrick Stevens of MIRIvolunteers.org. A video of the conversation can be found at the bloggingheads website.