Derided, disparaged and cursed to the heavens, book critics are depicted as literature’s grand villains – as frustrated creators and gleeful wreckers. But what do critics really do? And why are they necessary for a healthy literary ecosystem? James Jiang, Beejay Silcox and Christos Tsiolkas join Kate and Cassie as part of a panel discussion at Canberra Writers' Festival - five Aussie critics - making the case for criticism.