In this article I sketch G. N. Lewis’s views on chemical bonding and Linus Pauling’s attempt to preserve Lewis’s insights within a quantum‐mechanical theory of the bond. I then set out two broad conceptions of the chemical bond, the structural and the energetic views, which differ on the extent in which they preserve anything like the classical chemical bond in the modern quantum‐mechanical understanding of molecular structure. †To contact the author, please write to: Department of Philosophy, Durham University, 50 Old (...) Elvet, Durham DH1 3HN, UK; e‐mail: r.f.hendry@durham.ac.uk. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Joint and Grief AchesHeer HendrySomething that surprised me when I started my clinical rotations in medical school was how often we discussed proper footwear. In the lulls of rounds, I've heard healthcare providers talk about how worn-down shoes or inadequate arch support have caused them joint and back pains. We spend hours on our feet and bring the aches home with us, a reminder of our workday as we (...) walk our dogs or grocery shop. Embarrassingly, this is what was on my mind as I was starting a 12-hour shift wearing a new pair of shoes that an ICU nurse had recommended.It was the third day of my emergency medicine rotation, and my team received descriptions and plans for the 23 patients in the department precisely at 0700. I scribbled notes about each patient on my notepad, learning to distinguish which aspects of each patient were important to carry into this next shift for good continuity of care. For one patient, my note read: "aspiration, sepsis, hospice."My resident and I walked into each room and introduced ourselves, confirmed their story, and updated them on the next steps that we would be working on. The 4th patient on our list was the one I noted above—an 87-year-old male who was brought in after repeated bouts of emesis (vomiting) and choking. This was his fifth hospital visit this year for similar chief complaints, two of which resulted in ICU stays. Hours earlier, his two sons and two daughters had made the decision to place him on hospice.Upon entering the room, I saw an elderly patient lying on a stretcher with his eyes closed, grimacing and breathing rapidly. There was a younger man at his bedside staring at the patient while drumming his fingers on a coffee cup from a gas station next to the hospital. He didn't notice us walk in and was startled as we began to introduce ourselves. He identified himself as the patient's son, telling us he had just arrived at the hospital but had been on a conference call with his other siblings and palliative care earlier. His eyes darted between us and his father's rapid, shallow breaths.We updated him on his father's condition, explaining that we'd been making him comfortable with morphine and benzodiazepines. We talked about his blood lactic acid, his electrolytes, and his feeding tube. He continued drumming his fingers on the cup and nodding as we discussed trying to find an inpatient bed for his father. We informed him about the unpredictability of how much longer he would be alive and the unlikelihood of discharge. We asked if we could answer any questions for him, and he shook his head, but as we opened the door to leave, he asked: "So, the morphine is shutting down his body, right?" We clarified the purpose of the morphine, explaining that the morphine was making him comfortable and pain-free, but that his body was shutting down on its own."But in a way I'm still killing him?" he asked. My chest squeezed tight at that question. My goal for this patient immediately changed from getting him a bed in the inpatient unit to convincing his son that he was not harming his father. We started from the beginning and explained the lab markers and prognosis once again and asked if he'd like to speak to palliative care in person. He simply nodded as we exited to give him privacy.Leaving that room, it was barely 7:00 am. We still had 19 other patients to check on. My chest was still tight, but I could not allow my mind to remain in that room while the other patients were still pending exams, workups, and admissions. I acknowledged to myself that reflection would have to occur later, and yet, as we walked to the next [End Page e16] room, I wondered if the resident I was with had lost anyone in his life as I have in mine. Seeing the son trying to process and understand the situation in real time triggered my memories of past times... (shrink)

Philosophers have often debated the truth of microstructural essentialism about chemical substances: whether or not the structure of a chemical substance at the molecular scale is what makes it the substance it is. Oddly they have tended to pursue this debate without identifying what a structure is, and with some confusion and about what a chemical substance is. In this paper I draw on chemistry to rectify those omissions, providing a pluralist account of structure, clarifying what (according to chemistry) a (...) chemical substance is and defending microstructural essentialism, as I understand that position. I then give an account of the existence of composite substances and objects in chemistry, an issue that goes back to Aristotle. (shrink)

In this article I assess the problems and prospects of a microstructural approach to chemical substances. Saul Kripke and Hilary Putnam famously claimed that to be gold is to have atomic number 79 and to be water is to be H2O. I relate the first claim to the concept of element in the history of chemistry, arguing that the reference of element names is determined by atomic number. Compounds are more difficult: water is so complex and heterogeneous at the molecular (...) level that `water is H2O' seems false under some interpretations. I sketch a response to this problem. (shrink)

Interdisciplinary efforts from developmental psychology, phenomenology, and philosophy of mind, have studied the rudiments of social cognition and conceptualized distinct forms of intersubjective communication and interaction at human early life.Interaction theoristsconsiderprimary intersubjectivitya non-mentalist, pre-theoretical, non-conceptual sort of processes that ground a certain level of communication and understanding, and provide support to higher-level cognitive skills. We argue the study of human/neurorobot interaction consists in a unique opportunity to deepen understanding of underlying mechanisms in social cognition through synthetic modeling, while allowing to (...) examine a second person experiential (2PP) access to intersubjectivity in embodied dyadic interaction. Concretely, we propose the study of primary intersubjectivity as a 2PP experience characterized by predictive engagement, where perception, cognition, and action are accounted for an hermeneutic circle in dyadic interaction. From our interpretation of the concept ofactive inferenceinfree-energy principletheory, we propose an open-source methodology namedneural robotics library(NRL) for experimental human/neurorobot interaction, wherein a demonstration program namedvirtual Cartesian robot(VCBot) provides an opportunity to experience the aforementioned embodied interaction to general audiences. Lastly, through a study case, we discuss some ways human-robot primary intersubjectivity can contribute to cognitive science research, such as to the fields of developmental psychology, educational technology, and cognitive rehabilitation. (shrink)

By their own account, physicalists are committed to the claim that physics is causally complete, or closed. The claim is presented as an empirical one. However, detailed and explicit empirical arguments for the claim are rare. I argue that molecular models are a key source of evidence but that, on closer inspection, they do not support the completeness claim.

We argue that the inference from dispositional essentialism about a property (in the broadest sense) to the metaphysical necessity of laws involving it is invalid. Let strict dispositional essentialism be any view according to which any given property’s dispositional character is precisely the same across all possible worlds. Clearly, any version of strict dispositional essentialism rules out worlds with different laws involving that property. Permissive dispositional essentialism is committed to a property’s identity being tied to its dispositional profile or causal (...) role, yet is compatible with moderate interworld variation in a property’s dispositional profile. We provide such a model of dispositional essentialism about a property and metaphysical contingency of the laws involving it. (shrink)

Abstract:After a decade of intensive debate, stakeholder ideas have come to exert a significant influence on academic management thinking, but normative stakeholder theory itself appears to be in considerable disarray. This paper attempts to untangle the confusion and to prepare the ground for a more productive approach to the normative stakeholder problem. The paper identifies three distinct kinds of normative stakeholder theory and three different levels of claim that can be made by such theories, and uses this classification to argue (...) that stakeholder theorists have consistently pitched their sights either too high or too low to engage effectively with the rival shareholder theory. To the extent that they have their sights too high they have also undermined their own position by sacrificing credibility and introducing major problems of derivation. (shrink)

Although business and society scholars have sought to demonstrate that corporate social performance (CSP) leads to corporate financial performance (CFP), a complete model of the pathway from CSP to CFP has not been substantiated. One suggestion is that certain indicators of CSP are noticed by stakeholders, who then act in ways that ultimately affect the firm's CFP. The present study focused on the first step in this path: identifying the factors that initially lead a stakeholder group to target a particular (...) firm. Existing theory from the literature on the environmental movement, stakeholder theory, and CSP fostered the development of eight propositions regarding corporate environmental performance. Case studies of five environmental non-governmental organizations (ENGOs) are used to address the propositions. The case studies also supply additional insight into ENGO targeting of particular firms, unrelated to the propositions, thereby facilitating the development of a theoretical model. (shrink)

Mechanisms are the how of chemical reactions. Substances are individuated by their structures at the molecular scale, so a chemical reaction is just the transformation of reagent structures into product structures. Explaining a chemical reaction must therefore involve different hypotheses about how this might happen: proposing, investigating and sometimes eliminating different possible pathways from reagents to products. One distinctive aspect of mechanisms in chemistry is that they are broken down into a few basic kinds of step involving the breaking and (...) making of bonds between atoms. This is necessary for chemical kinetics, the study of how fast reactions happen, and what affects it. It draws on G.N. Lewis’ identification of the chemical bond as involving shared electrons, which from the 1920s achieved the commensuration of chemistry and physics. The breaking or making of a bond just is the transfer of electrons, so a chemical bond on one side of an equation might be balanced on the other side by the appearance of a corresponding quantity of excess charge. A bond is understood to have been exchanged for a pair of electrons. Since reaction mechanisms rely on identities, doesn’t the establishment of a reaction mechanism explain away the chemical phenomena, showing that they are no more than the movement of charges and masses? In one sense yes: these mechanisms seem to involve a conserved-quantity conception of causation. But in another sense no: the ‘lower-level’ entities can do what they do only when embedded in higher-level organisation or structure. There need be no threat of reduction. (shrink)

In this essay I critically examine the role of entropy of mixing in articulating a macroscopic criterion for the sameness and difference of chemical substances. Consider three cases of mixing in which entropy change occurs: isotopic variants, spin isomers, and populations of atoms in different orthogonal quantum states. Using these cases I argue that entropy of mixing tracks differences between physical states, differences that may or may not correspond to a difference of substance. It does not provide a criterion for (...) the sameness and difference of substance that is appropriate to chemistry. (shrink)

The two authors of this paper have diametrically opposed views of the prevalence and strength of adaptation in nature. Hendry believes that adaptation can be seen almost everywhere and that evidence for it is overwhelming and ubiquitous. Gonzalez believes that adaptation is uncommon and that evidence for it is ambiguous at best. Neither author is certifiable to the knowledge of the other, leaving each to wonder where the other has his head buried. Extensive argument has revealed that each author (...) thinks his own view is amply supported by both theory and empirical evidence. Further reflection has revealed that the differences in opinion may start with the different disciplines in which we work: evolutionary ecology for Hendry and community ecology for Gonzalez. In the present paper, we each present devastating evidence supporting our own position and thus refuting that of the other. We then identify the critical differences that led to such opposing views. We close by combining our two perspectives into a common framework based on the adaptive landscape, and thereby suggest means by which to assess the prevalence and strength of adaptation. (shrink)

More than 1.5 billion students experienced disruption to education as a result of COVID-19, representing the most substantial interruption to global education in modern history. Many educational institutions transitioned to emergency remote teaching (ERT) overnight, which has presented an array of distinct challenges for educators. Using virtual interviews and an experiential approach to thematic analysis, the study examined Scottish primary teachers’ (n = 10) lived experiences of adapting to ERT practice. Findings demonstrated three main themes; ‘Meeting Learners’ Needs,’ ‘Influencing Engagement’, (...) and ‘The Impact of ERT on Teachers’. Key findings suggested that differentiating learning, engaging, and communicating with learners is more difficult during ERT than face-to-face teaching. Parental engagement is vital, however, is influenced by several mitigating factors. Finally, ERT is likely to have substantial effects on the wellbeing of those involved. Implications of these findings are considered and discussed. (shrink)

This is a reprinted excerpt from Sorell and Hendry, Business Ethics (Butterworth Heinemann, 1994).

In a recent arXiv preprint Richard Gill has criticized an experimental proposal published in a journal of theoretical physics which describes how to detect a macroscopic signature of fermionic sign changes. Here I point out that his worries stem from his own elementary algebraic and conceptual mistakes, and present several event-by-event numerical simulations which expose the vacuity of his claims by explicit computations.

It is pointed out that the Diosi-Penrose ansatz for gravity-induced quantum state reduction can be tested by observing oscillations in the flavor ratios of neutrinos originated at cosmological distances. Since such a test would be almost free of environmental decoherence, testing the ansatz by means of a next generation neutrino detector such as IceCube would be much cleaner than by experiments proposed so far involving superpositions of macroscopic systems. The proposed microscopic test would also examine the universality of superposition principle (...) at unprecedented cosmological scales. (shrink)

In this panel, we explore the future of value sensitive design (VSD). The stakes are high. Many in public and private sectors and in civil society are gradually realizing that taking our values seriously implies that we have to ensure that values effectively inform the design of technology which, in turn, shapes people’s lives. Value sensitive design offers a highly developed set of theory, tools, and methods to systematically do so.