In this volume, which was originally published in 1982, Paul Horwich
presents a clear and unified approach to a number of problems in the
philosophy of science. He diagnoses the failure of other attempts to
resolve them as stemming from a too-rigid, all-or-nothing conception of
belief, and adopts instead a Bayesian strategy, emphasising the degree
of confidence to which we are entitled the light of scientific evidence.
This probabilistic approach, he argues, yields a more complete
understanding of the assumptions and procedures characteristic of
scientific reasoning. It also accounts for the merits of simplicity,
severe tests and surprising predictions, and provides a way in which the
dispute between the realist and instrumentalist views of science might
be resolved. The result is a crisp, well-focused contribution to the
philosophy of science. The elaboration of an important conception of
probability will stimulate anyone with an interest in the field.