Stephen Jay Gould was the Alexander Agassiz Professor of Zoology and Professor of Geology at Harvard and the Curator for Invertebrate Palaeontology in the University's Museum of Comparative Zoology. He died in May 2002. Steven Rose is Professor of Biology and Director of the Brain and Behaviour Research Group at The Open University, Visiting Professor in the Department of Anatomy and Developmental Biology at University College London, and, jointly with sociologist Hilary Rose, Professor of Physic (genetics and society) at Gresham College, London. His books include The Making of Memory (1992), Lifelines (1997), Alas, Poor Darwin- Arguments Against Evolutionary Psychology (with Hilary Rose) (2000) and The 21st-Century Brain (2004). Paul McGarr is a mathematics teacher in an east London secondary school and a leading member of the Respect coalition in Tower Hamlets. He is on the editorial board of the International Socialism quarterly journal and has written regularly for that journal on issues around science and society. He has written a number of articles and books, including Marxism and the Great French Revolution (1992) and Mozart- Overture to Revolution (2001).