Reductionism--understanding complex processes by breaking them into simpler elements--dominates scientific thinking around the world and has certainly proved a powerful tool, leading to major discoveries in every field of science. But reductionism can be taken too far, especially in the life sciences, where sociobiological thinking has bordered on biological determinism. Thus popular science writers such as Richard Dawkins, author of the highly influential The Selfish Gene, can write that human beings are just "robot vehicles blindly programmed to preserve the selfish (...) molecules known as genes." Indeed, for many in science, genes have become the fundamental unit for understanding human existence: genes determine every aspect of our lives, from personal success to existential despair: genes for health and illness, genes for criminality, violence, and sexual orientation. Others would say that this is reductionism with a vengeance. In Lifelines, biologist Steven Rose offers a powerful alternative to the ultradarwinist claims of Dawkins, E.O. Wilson, Daniel Dennett and others. Rose argues against an extreme reductionist approach that would make the gene the key to understanding human nature, in favor of a more complex and richer vision of life. He urges instead that we focus on the organism and in particular on the organism's lifeline: the trajectory it takes through time and space. Our personal lifeline, Rose points out, is unique--even identical twins, with identical genes at birth, will differ over time. These differences are obviously not embedded in our genes, but come about through our developmental trajectory in which genes, as part of the biochemical orchestra of trillions of cells in each human body, have an important part--but only a part--to play. To illustrate this idea, Rose examines recent research in modern biology, and especially two disciplines--genetics (which looks at the impact of genes on form) and developmental biology (which examines the interaction between the organism and the environment)--and he explores new ideas on biological complexity proposed by scientists such as Stuart Kauffman. He shows how our lifelines are constructed through the interplay of physical forces--such as the intrinsic chemistry of lipids and proteins, and the self-organizing and stabilizing properties of complex metabolic webs--and he reaches a startling conclusion: that organisms are active players in their own fate, not simply the playthings of the gods, nature, or the inevitable workings out of gene-driven natural selection. The organism is both the weaver and the pattern it weaves. Lifelines will be a rallying point for all who seek an alternative to the currently fashionable, deeply determinist accounts which dominate popular science writing and, in fact, crowd the pages of some of the major scientific journals. Based on solid, state-of-the-art research, it not only makes important contributions to our understanding of Darwin and natural selection, but will swing the pendulum back to a richer, more complex view of human nature and of life. (shrink)

In Life Beyond the Gene, Steven Rose offers a theory of life which insists that we as humans -- and indeed all living creatures -- create our own futures, though in circumstances not of our own choosing. Placing the organism at the center of life, Rose confronts the ideology of reductionism and ultra-Darwinism, with its insistence that all aspects of human life from sexual preference to infanticide, political orientation to violence, male domination to alcoholism, are in our genes and are (...) the inevitable consequences of natural selection. These claims, Rose asserts, are not only socially naive, but fundamentally misunderstand the active and irreducible nature of living processes. Rose argues that life depends on the elaborate web of interactions that occur within cells, organisms, and ecosystems, in which DNA has one part to play. From early in their development, living organisms have to be capable of quasi-independent existence while growing to maturity. If we are to understand life, we must recapture an understanding of the entire living organism and its trajectory through time and space. Rose calls these trajectories lifelines. Provocative and incisive, Life Beyond the Gene provides a compelling response to those enthusiasts of the gene who would deny the complexity of life. (shrink)

Neuroscientists now approach some of the deepest problems of the human condition - from illnesses and disorders such as Alzheimer's disease and schizophrenia, to the search for the nature of consciousness itself - in the belief that their science can say something useful about these processes and how to intervene in them. At the same time, by addressing the biological mechanisms involved in phenomena as varied as street violence, drug addiction and sexual orientation, the new science raises profound ethical, legal, (...) social and medical questions. Over many of these issues there is no clear consensus but rather, intense debate. Is memory a molecular process? Is schizophrenia a genetic disorder? What does the future hold for psychopharmacology? Can consciousness be computed and is artificial intelligence a real prospect? From Brains to Consciousness? brings together fourteen of the world's leading neuroscientists, psychologists, computer modellers and philosophers, in a series of chapters that offer fascinating and up-to-the-minute insight into the debates that are taking place in this exciting area of research. (shrink)