A review of Causality in Medicine with Particular Reference to the Viral Causation of Cancers, by Brendan Clarke. Brendan Clarke tackles one of the main and most controversial issues both in general philosophy of science and in the philosophy of medicine, that is causation. His remarkably clear and detailed analysis takes cancer research as a privileged standpoint, focusing on how we are to conceive the modeling of a causal nexus when dealing with the viral etiology of cancer. Reflections in philosophy of science are here substantiated by specific examples, described with great historical and...