To be provocative and useful, an anthology should not be a mere collection. I have endeavored to make this book more than a set of essays related only by a common concern with philosophical issues involving parapsychology. Through the division of the text into sections and the headings given the respective sections I have attempted to impose some organization on the general topic. More importantly, within each section I have tried to include selections that engage the reader in the process of argument and philosophical disagreement. The result, I believe, is a collection that develops some important themes in the philosophy of parapsychology, that conveys to the reader a sense of the dialectical advance of debate in this area, and that "hangs together" as a whole. To promote the latter end, I have occasionally interpolated footnotes of clarification or cross-reference, always in square brackets and signed "Ed."
On the other hand, I have made no attempt to summarize or to interpret for the reader the individual selections or the structure of the argument in a particular section of the text. Learning to do this for oneself is a crucial aspect of education in philosophy and is thus better left to the reader and perhaps to teachers who may be using this collection in their own courses for their own purposes. In my view, the editor of an anthology has a special obligation to select provocative materials for inclusion and