With the discovery in 1995 of the first planet orbiting another star, we know that planets are not unique to our own Solar System. For centuries, humanity has wondered whether we are alone in the Universe. We are now finally one step closer to knowing the answer. The quest for exoplanets is an exciting one, because it holds the possibility that one day we might find life elsewhere in the Universe, born in the light of another sun. Written from the (...) perspective of one of the pioneers of this scientific adventure, this exciting account describes the development of the modern observing technique that has enabled astronomers to find so many planets orbiting around other stars. It reveals the wealth of new planets that have now been discovered outside our Solar System, and what this means in terms of finding other life in the Universe. (shrink)

This collection of previously unpublished essays on Spinoza provides a representative sample of new and interesting research on the philosopher. Spinoza's philosophy still has an underserved reputation for being obscure and incomprehensible. In these chapters, Spinoza is seen mostly as a metaphysician who tried to pave the way for the new science. The essays investigate several themes, notably Spinoza's monism, the nature of the individual, the relation between mind and body, and his place in 17th century philosophy including his relation (...) to Descartes and Leibniz. The top scholars working on Spinoza today are all represented, including John Carriero, Michael Della Rocca, and Don Garrett. (shrink)

Our concern in this paper is with the question of how irrational an intentional agent can be, and, in particular, with an argument Stephen Stich has given for the claim that there are only very minimal a priori requirements on the rationality of intentional agents. The argument appears in chapter 2 of The Fragmentation of Reason.1 Stich is concerned there with the prospects for the ‘reform-minded epistemologist’. If there are a priori limits on how irrational we can be, there are (...) limits to how much reform we could expect to achieve. With this in mind, Stich sets out to determine what a priori limits there are on irrationality by examining `a cluster of influential arguments aimed at showing that there are conceptual constraints on how badly a person can reason’ (p. 30). Stich aims to remove the threat of a priori limits on the project of reforming our cognitive practices by showing, first, that these influential arguments are bad arguments, and, second, that at best there are only minimal constraints on how irrational we can be.2 We aim to show three things. The first is that Stich’s own arguments against strong a priori limits on how badly a person can reason are unsuccessful, because Stich fails to take into account that the concept of rationality is an epistemic, not just a logical concept, and because he fails to take into account the connection between having a concept and being able to recognize conceptually simple inferences involving the concept. The second is that the position Stich argues for, on the basis of Richard Grandy’s principle of humanity, turns out not to be distinct from the one he rejects. The third is that, in any case, the position that Stich rejects in order to preserve some scope for the project of improving our reasoning is not only no danger to that project but must be presupposed by it. (shrink)

This volume bears witness to the continuing importance and influence of that agenda.