A 1984 rejection letter from Nature of your paper outlining the Gaia hypothesis is displayed in the exhibition. What do you think of peer review — is it necessary? Well, as far as I’m concerned, I don’t have any peer review. But I don’t think it is practical to get rid of it. For run-of-the-mill papers, say if somebody comes up with a really neat method for analysing some component of urine or that kind of thing, it is important to keep it. But not on larger topics.