This book works through some of the theoretical issues that have been accumulating in informal logic over the past 20 years. At the same time, it defines a core position in the theory of argument in which those issues can be further explored. The underlying concern that motivates this work is the health of practice of argumentation as an important cultural artifact. A further concern is for logic as a discipline. Argumentative and dialectical in nature, this book presupposes some awareness of the theory of argument in recent history, and some familiarity with the positions that have been advanced. It will be of interest to academics, researchers, and advanced undergraduate and graduate students in the disciplines of logic, rhetoric, linguistics, speech communication, English composition, and psychology.

This book works through some of the theoretical issues that have been accumulating in informal logic over the past 20 years. At the same time, it defines a core position in the theory of argument in which those issues can be further explored. The underlying concern that motivates this work is the health of practice of argumentation as an important cultural artifact. A further concern is for logic as a discipline. Argumentative and dialectical in nature, this book presupposes some awareness of the theory of argument in recent history, and some familiarity with the positions that have been advanced. It will be of interest to academics, researchers, and advanced undergraduate and graduate students in the disciplines of logic, rhetoric, linguistics, speech communication, English composition, and psychology.

One of the most important divisions in the human mind is between perception and reasoning. We reason from information that we take ourselves to have already, but perception is a means of taking in new information. Reasoning can be better or worse, but perception is considered beyond reproach. The Rationality of Perception argues that these two aspects of the mind become deeply intertwined when beliefs, fears, desires, or prejudice influence what weperceive. When the influences reach all the way to perceptual appearances, we face a philosophical problem: is it reasonable to strengthen what one believes or fears or suspects on the basis of an experience that wasgenerated by those very same beliefs, fears, or suspicions? Drawing on examples involving racism, emotion, and scientific theories, Siegel argues that perception itself can be rational or irrational, and makes vivid the relationship between perception and culture.

This book brings together essays by one of the pre-eminent scholars of informal logic.

"In the years since I first read Bennett's brilliant philosophical parable, it has often struck me as incredible that it never became part of the canon of what came to be known . . . as the Language of Thought. Bennett begins, like Mandeville, with honeybees . . . and he takes the reader step by compelling step across the distance that the bees would have to traverse to come abreast of us. The book in my view is a philosophical classic." -- Arthur Danto, Columbia University

Scientists and philosophers have long struggled to answer the questions of when human life begins and when human life has inherent value. The phenomenon of identical (monozygotic) twinning presents a significant challenge to the view that human life and human personhood begin at conception. The fact that a single embryo can split to generate two (or more) genetically identical embryos seems to defy the notion that prior to splitting an embryo can be a single human individual. In Untangling Twinning, Maureen Condic looks at the questions raised by human twinning based on a unique synthesis of molecular developmental biology and Aristotelian philosophy. She begins with a brief historical analysis of the current scientific perspective on the embryo and proceeds to address the major philosophic and scientific concerns regarding human twinning and embryo fusion: Is the embryo one human or two (or even more)? Does the original embryo die, and if not, which of the twins is the original? Who are the parents of the twins? What do twins, chimeras, cloning, and asexual reproduction in humans mean? And what does the science of human embryology say about human ensoulment, human individuality, and human value? Condic's original approach makes a unique contribution to the discussion of human value and human individuality, and offers a clear, evidence-based resolution to questions raised by human twinning. The book is written for students and scholars of bioethics, scientists, theologians, and attorneys who are involved in questions surrounding the human embryo.