It is difficult to write a review that does justice to how good this book is, when my views are in such stark disagreement with that of the author's. Nonetheless, this is a great book. Wesley Salmon, student of Reichenbach, fleshes out the currently accepted model of how inferences are drawn in science. The book is, pound-for-pound, one of the best reads in all of philosophy of science. Salmon begins with Hume and takes off from there, exploring everything from what causality is to statistical inferences from the works of Reichenbach and Kolmogorov.