In the space of three years–from 1962 to 1964 – the proposition that chloroplasts contain their own DNA made the transition from being a controversial hypothesis to an accepted dogma. The crucial evidence came from biochemical analyses of the organelles themselves and from cytological studies. These discoveries revolutionized our views on the distribution of genetic information within the cell, and gave rise to the vigorous new field of chloroplast molecular biology. It is nevertheless ironic to recall that of the biochemical (...) papers published on this topic in 1962–64, the one which was probably the most influential in creating the new paradigm was in fact quite wrong, and attributed to the chloroplast, DNA species which did not in reality belong to this organelle at all. (shrink)

In this paper, I examine some main threads of the identification stage of Scotus's project in the fourth chapter of De Primo, where he tries to show that a first efficient cause must have the attributes of simplicity, intellect, will, and infinity. Many philosophers are favorably disposed towards one or another argument such as Scotus's (e.g., the cosmological argument from contingency) purporting to show that there is an absolutely first efficient cause. How far can Scotus take us from this starting (...) point towards the ultimate aim of establishing the existence of a being more recognizably identifiable as God? (shrink)

Theories of autobiographical memory emphasise effortful, generative search processes in memory retrieval. However recent research suggests that memories are often retrieved directly, without effortful search. We investigated whether direct and generative retrieval differed in the characteristics of memories recalled, or only in terms of retrieval latency. Participants recalled autobiographical memories in response to cue words. For each memory, they reported whether it was retrieved directly or generatively, rated its visuo-spatial perspective, and judged its accompanying recollective experience. Our results indicated that (...) direct retrieval was commonly reported and was faster than generative retrieval, replicating recent findings. The characteristics of directly retrieved memories differed from generatively retrieved memories: directly retrieved memories had higher field perspective ratings and lower observer perspective ratings. However, retrieval mode did not influence recollective experience. We discuss our findings in terms of cue generation and content construction, and the implication for reconstructive models of autobiographical memory. (shrink)

Many philosophers judge that typical agent-causal accounts of freedom improperly sacrifice the possibility of rational explanation of the action for the sake of securing control, while others judge that the reverse shortcoming plagues typical event causal accounts. (Of course, many philosophers make both these judgments.) After briefly rehearsing the reasons for these verdicts on the two traditional strategies, we undertake an extended examination of Randolph Clarke's recent attempt to meet the challenge by proposing an original, "integrated agent-causal" account of human (...) free action. We argue that Clarke's account fails. In a final section, we sketch a more promising route to integration. (shrink)

Throughout the 1990s, Jaegwon Kim developed a line of argument that what purport to be nonreductive forms of physicalism are ultimately untenable, since they cannot accommodate the causal efficacy of mental states. We argue that, while the argument needs some tweaking, its basic thrust is sound. In what follows, we lay out our preferred version of the argument and highlight its essential dependence on a causal-powers metaphysic, a dependence that Kim does not acknowledge in his official presentations of the argument. (...) We then discuss two recent physicalist strategies for preserving the causal efficacy of the mental in the face of this sort of challenge, strategies that (ostensibly) endorse a causal powers metaphysics of properties while offering distinctive accounts of the physical realization of mental properties. We argue that neither picture can be satisfactorily worked out, and that seeing why they fail strongly suggests that nonreductive physicalism and a causal powers metaphysic are not compatible, as our original argument contends. Since we also believe that robust realism concerning mental causation should not be abandoned, we take the argument of this paper to strongly motivate an account on which the mental is unrealized by and ontologically emergent from the physical. In a final section, we sketch what an ontologically emergentist account of the mental might look like. (shrink)

What makes ethical accounts natural law ethical is, I argue, commonly misrepresented in teaching within much of the philosophical academy. Yet those immersed in the field of natural law and ethics rarely give definitions/brief characterisations of what makes ethical accounts natural law ethical. I suggest theoretical reasons for the lack. I argue that bringing natural law into ethics is best understood as leading to theoretically unitary accounts, not simply collections of positions detachable from each other: an overlooked and significant point (...) when defending natural law ethical accounts. My arguments throughout rely on the metaethical/normative ethical distinction, which is relatively little used in the natural law literature. I argue that the distinction helps clarify what is distinctive of natural law ethical accounts in general, especially to the secular contemporary philosophical academy, where appreciation of natural law ethical accounts is commonly appreciably lower than in philosophical contexts with a religious ethos. (shrink)

Gilbert Ryle never pursued research under Edmund Husserl. However, Ryle was indeed Husserl’s student in a broader sense, as much of his own work was deeply influenced by his studies of Husserl’s pre-World War I writings. While Ryle is the thinker whose name typically comes to mind in connection with the concern over category mistakes I argue that (1) Husserl deserves to be known for precisely this concern as well, and (2) the similarity between them is no accident. Developing this (...) reading of Ryle’s Husserlian pedigree forces a broader reevaluation of each of their roles in twentieth-century thought. (shrink)

There is a lack of clarity in the literature about what constitutes the natural law approach to ethics and what is incompatible with it. The standard, and largely historical, way of understanding the natural law approach risks overlooking theoretical differences of fundamental importance regarding what the natural law approach is usually taken to uphold. Against Craig Paterson, I argue that a necessary condition for an ethical account to uphold fully the natural law approach is that it does not contain any (...) dependence upon the metaethical category of non-naturalism understood in non-supernaturalist terms. Using the ‘new natural law’ theory of John Finnis to illustrate my case, I also argue that an ethical theory can be largely in keeping with the natural law approach but nonetheless contain elements at odds with it: the issue is more complex than a simple binary. This is an under-explored possibility in natural law ethics. (shrink)

Our Fate. Essays on God and Free Will. By Martin Fischer John.

Gilbert Ryle never pursued research under Edmund Husserl. However, Ryle was indeed Husserl’s student in a broader sense, as much of his own work was deeply influenced by his studies of Husserl’s pre-World War I writings. While Ryle is the thinker whose name typically comes to mind in connection with the concern over category mistakes I argue that (1) Husserl deserves to be known for precisely this concern as well, and (2) the similarity between them is no accident. Developing this (...) reading of Ryle’s Husserlian pedigree forces a broader reevaluation of each of their roles in twentieth-century thought. (shrink)

New Blackfriars, Volume 102, Issue 1100, Page 439-441, July 2021.

This paper situates Husserl’s phenomenology and Carnap’s logical empiricism within a common project—the pursuit of structural objectivity. The rise of empirical psychology and physiology in the late nineteenth century contributed to a view of the self that both thinkers find threatening to the possibility of communication and thus knowledge. With subjectivity presenting the danger of incommunicability, objectivity becomes oriented around communicability. To overcome this threat and to secure an understanding of the possibility of knowledge, each thinker appeals to the formal (...) structures of constitution and logical grammar. In doing so, they help to establish a view of objectivity that responds to contemporary science and is consistent with it. This places Husserl much closer to the birth of modern scientific objectivity than he seems to have realized. Even so, whatever credibility he may have lost in the eyes of historiographers of science should be regained in his stature as philosopher of science. (shrink)