In the wake of the University of California's decision to end their contract with Elsevier, the world's largest scientific publisher, a lot of people have been talking about the effect that publishers like Elsevier have on the progress of science. William Gunn, director of scholarly communications for Elsevier, and Alex Holcombe, cognitive scientist and open science advocate, discuss their differing perspectives on the question. The discussion includes: What are scientists' main complaints about Elsevier? What value does Elsevier add? Is the academic publishing market a functioning one? Can Elsevier be a force for innovation?