The authors of science books are always trying to find new ways to get the message across to their audiences. In Dialogues , Clifford Johnson combines a very modern technique - the graphic novel or comic strip - with an approach that goes back to Ancient Greece - using a dialogue to add life to what might seem a dry message. We have seen the comic strip approach trying to put across quite detailed science before in Mysteries of the Quantum Universe . As with that book, Dialogues manages to cover a fair amount of actual physics, but I still feel that the medium just wastes vast acres of page to say very little at all. This is brought home here because quite a lot of the sections of Dialogues start with several pages with no text on at all, just setting up the scenario. As for using a discussion between two people to put a message across, Johnson makes the point that, for instance, Galileo's very readable masterpiece T wo New Sciences is i...