"Superior in its explanations to exercise questions, this is among the most helpful critical thinking texts I have come across - perfect for my students. Very impressive." David Hunter, Department of Philosophy, Buffalo State College, SUNY "This book covers important material not well handled by otherwise comparable texts. Indeed, the whole treatment of causal arguments is a lucid presentation of subtle material. I am aware of many other such treatments, but few are as good and none better." Tim Kenyon, Department of Philosophy, University of Waterloo