Pancreatitis is a complex, progressively destructive inflammatory disorder. Alcohol was long thought to be the primary causative agent, but genetic contributions have been of interest since the discovery that rare PRSS1, CFTR and SPINK1 variants were associated with pancreatitis risk. We now report two associations at genome-wide significance identified and replicated at PRSS1-PRSS2 and X-linked CLDN2 through a two-stage genome-wide study. The PRSS1 variant likely affects disease susceptibility by altering expression of the primary trypsinogen gene. The CLDN2 risk allele is (...) associated with atypical localization of claudin-2 in pancreatic acinar cells. The homozygous CLDN2 genotype confers the greatest risk, and its alleles interact with alcohol consumption to amplify risk. These results could partially explain the high frequency of alcohol-related pancreatitis in men. © 2012 Nature America, Inc. All rights reserved. (shrink)

This paper reviews the fate of the central ideas behind the complementary learning systems (CLS) framework as originally articulated in McClelland, McNaughton, and O’Reilly (1995). This framework explains why the brain requires two differentially specialized learning and memory systems, and it nicely specifies their central properties (i.e., the hippocampus as a sparse, pattern-separated system for rapidly learning episodic memories, and the neocortex as a distributed, overlapping system for gradually integrating across episodes to extract latent semantic structure). We review the application (...) of the CLS framework to a range of important topics, including the following: the basic neural processes of hippocampal memory encoding and recall, conjunctive encoding, human recognition memory, consolidation of initial hippocampal learning in cortex, dynamic modulation of encoding versus recall, and the synergistic interactions between hippocampus and neocortex. Overall, the CLS framework remains a vital theoretical force in the field, with the empirical data over the past 15 years generally confirming its key principles. (shrink)

Compared to our understanding of positive prediction error signals occurring due to unexpected reward outcomes, less is known about the neural circuitry in humans that drives negative prediction errors during omission of expected rewards. While classical learning theories such as Rescorla–Wagner or temporal difference learning suggest that both types of prediction errors result from a simple subtraction, there has been recent evidence suggesting that different brain regions provide input to dopamine neurons which contributes to specific components of this prediction error (...) computation. Here, we focus on the brain regions responding to negative prediction error signals, which has been well-established in animal studies to involve a distinct pathway through the lateral habenula. We examine the activity of this pathway in humans, using a conditioned inhibition paradigm with high-resolution functional MRI. First, participants learned to associate a sensory stimulus with reward delivery. Then, reward delivery was omitted whenever this stimulus was presented simultaneously with a different sensory stimulus, the conditioned inhibitor. Both reward presentation and the reward-predictive cue activated midbrain dopamine regions, insula and orbitofrontal cortex. While we found significant activity at an uncorrected threshold for the CI in the habenula, consistent with our predictions, it did not survive correction for multiple comparisons and awaits further replication. Additionally, the pallidum and putamen regions of the basal ganglia showed modulations of activity for the inhibitor that did not survive the corrected threshold. (shrink)

Photo ID 222412412 © US Navy Medicine | Dreamstime.com ABSTRACT In a non-military setting, the answer is clear: it would be unethical to treat someone based on non-medical considerations such as nationality. We argue that Battlefield Triage is a moral tragedy, meaning that it is a situation in which there is no morally blameless decision and that the demands of justice cannot be satisfied. INTRODUCTION Medical resources in an austere environment without quick recourse for resupply or casualty evacuation are often (...) limited. The shortage extends not only to supplies like blood products and drugs, but physicians and other medical personnel. In the midst of a mass casualty scenario, such as a battle that includes intense ground fighting, the medical staff will stretch scarce resources and triage casualties according to specific criteria. Typically, they proceed by providing care for the most severely wounded first, referred to here as conventional triage. At times, though, the staff may reverse the triage so that soldiers with minor wounds can return to the fight. In a mass casualty situation, when medical personnel apply conventional triage and treat casualties from opposing forces, a dilemma may arise. We argue that it can be permissible for military physicians to prioritize their own soldiers over enemy combatants in a mass casualty triage, where reverse triage does not apply. The case we will focus on is as follows: Battlefield Triage: During combat operations on a remote island in the Pacific Ocean, a compatriot soldier and an enemy combatant arrive at the compatriot soldier country’s medical treatment facility. Both have similar gunshot wounds to the abdomen, and they arrive with similar conditions. Both have low oxygen saturation and excessive blood loss. The sole physician only has enough time to stabilize one person. The scenario is brief, and we are aware that medical rules of eligibility will most often dictate how the physician proceeds,[1] but this scenario is useful in setting up the question we focus on in this paper: would it be wrong to favor the stabilization of a soldier just because the soldier is the physician’s compatriot? In other words, can nationality serve as an ethically justified tiebreaker in a situation such as Battlefield Triage?[2] In a non-military setting, the answer is clear: it would be unethical to treat someone based on non-medical considerations such as nationality. The AMA’s Code of Medical Ethics asserts that physicians have “ethical obligations to place patients’ welfare above their self-interest and above obligations to other groups.”[3] The World Medical Association’s Declaration of Tokyo affirms that “no motive, whether personal, collective or political, shall prevail against this higher purpose” of alleviating distress.[4] Physicians are taught early on that triage decisions must be medically indicated and made without consideration of factors such as race, ethnicity, religion, social status, and nationality. They are taught that public trust and obligations of justice grounded in equality demand that only medical indications be considered. But military physicians in a military setting are beholden to obligations, duties, and responsibilities as members of the military, and when these obligations, duties, and responsibilities conflict, as they do in Battlefield Triage, which loyalties win out and why?[5] Critics of partiality on national grounds argue that partiality undermines public trust in medicine and justice because everyone should be treated equally regardless of nationality.[6] Proponents of partiality argue that military obligations supersede equality and that justice requires partiality in such cases.[7] Despite the critics’ disagreement, both agree that there is a morally right, perhaps even blameless, course of action. Drawing on insights from virtue ethics, we argue that Battlefield Triage is a moral tragedy in which justice is unattainable and there is no action without moral cost. The assumption that there is a morally right choice is flawed. We argue that while no decision in this scenario is free from moral blame, there are reasons to favor treating one’s soldiers over enemy combatants. I. The Case Against Partiality There is a common assumption that there is a morally right or just decision in Battlefield Triage. A number of organizations and scholars claim that it is wrong for military physicians to favor their own soldiers on the grounds of nationality or some form of ‘group membership.’ (In a conflict involving service members from multiple nations working as a coalition, a soldier from an allied country may receive the same priority as the US service member due to ‘group membership.’) The World Medical Association’s WMA Declaration of Lisbon on the Rights of the Patient, which was reaffirmed in 2015, posits that, “[i]n circumstances where a choice must be made between potential patients for a particular treatment that is in limited supply, all such patients are entitled to a fair selection procedure for that treatment. That choice must be based on medical criteria and made without discrimination.”[8] This echoes what was set forth in Article 12 of the Geneva Conventions, which states that “[o]nly urgent medical reasons will authorize priority in the order of treatment to be administered.”[9] The argument for impartiality in Battlefield Triage is that every person is morally equal, and equality entails that medical distribution is, “based on a combination of medical need and urgency.”[10] This is in keeping with the bioethical principles that are generally applied.[11] II. The Case for Partiality On the other side, there are arguments that favoritism is the ethically right decision in Battlefield Triage.[12] The argument asserts that members of the military form a morally significant community of friends and participation in these relationships demands partiality. Just as parents have strong ethical duties to their children and not just any children, military personnel have ethical duties to their group, a group that involves an affirmation of mutual aid and support. Some have termed these ‘associative duties. According to Michael Gross, obligations of friendship, care, and solidarity “leave very little room for generally applicable principles of justice that would obligate a medic to treat enemy or non-compatriot wounded ahead of their compatriots.”[13] This is true in Battlefield Triage, but it may also be true even if the enemy’s soldier were more seriously wounded: “the ethics of small group cohesion, largely an ethics of care, mostly replaces the demands of impartial justice.”[14] In a more recent article, Gross explains that preferential treatment is ethically justified based on fighting capability and “the special obligations people owe friends, family, and, no less, comrades-in-arms.”[15] To not show partiality to the US soldier would be morally wrong on the grounds of friendship and mutual care.[16] III. The Moral Tragedy of Battlefield Triage Defenders and critics of Battlefield Triage favoritism based on nationality both frame their position as just or fair. For example, Justin List argues that physicians are “bound to practice medical neutrality,”[17] Marcus Adams denies that physicians “possess special ethical obligations” to enemy combatants because of their profession.[18] These perspectives assume that there is a morally right decision and that justice is attainable. The assumption that there is or can be a morally right Battlefield Triage decision, and we need to put our heads together to figure it out, remains strongly entrenched. However, the facts of the situation should give us pause; there are too many people and too few resources, and this demands a decision-making process that determines who will receive scarce resources. By its very nature, a battlefield triage decision has to be made based on some characteristic or value, a characteristic or value that will inevitably favor some at the expense of others. This is precisely why competing analyses “in the military context struggle to resolve these conflicts satisfactorily.”[19] Drawing on the insights of virtue ethics, we suggest that Battlefield Triage is a moral tragedy. Virtue ethics suggests that morality is about acting virtuously, which is to say that we should do what a virtuous person would do in the situation. Ethics is about figuring out how a just, wise, compassionate, loving, and fair person would act, and then doing that, as one grows in virtue. But life is not always clear cut, and it is possible that virtuous people may find themselves in a moral tragedy, a situation in which, through no fault of one’s own, a person must make a morally objectionable decision. After the action the virtuous person “emerges having done a terrible thing, the very sort of thing that the callous, dishonest, unjust, or in general vicious agent would characteristically do.”[20] Stated differently, a moral tragedy presents a virtuous person with two or more courses of action, all of which have a moral cost.[21] In Battlefield Triage, no matter how the physician goes about deciding, there is going to be defensible concern from those not saved. The fact that there are more people than can be helped fosters competing values in battlefield triage: maximize lives saved, treat people equally, treat the worse off, and support the war effort. Treating people equally may create tension between treating the worse off, maximizing lives saved, and supporting the war effort. Reverse triage is a case in point, as supporting the war effort conflicts with treating the worse off first, as is a fair lottery system since deploying a lottery may not maximize lives saved or support the war effort. There can be reasons why one person is selected over another, to be sure. Yet, there are reasons for making a decision, and that the decision is subject to legitimate moral concern is another. To recognize the moral tragedy of Battlefield Triage is to recognize the impossibility of acting blamelessly in the situation. In this situation, the virtuous military physician is going to have to sacrifice important values such as justice, compassion, and respect for others, even with a defensible criterion in hand. The physician will grieve this sacrifice accordingly. The physician may find her decision difficult or stressful, and rightly so, because of what her circumstances require of her. This kind of moral tragedy results “in actions which betray and violate the rights of persons to whom there may be a strong duty of care. When this happens, it properly triggers an appropriate moral emotion since our moral integrity has been violated and this affects how we think of ourselves and what we have become.”[22] Rather than view her triage decision as the morally superior choice, the virtuous military physician will view her decisions in these circumstances in a different light: it is the least bad option in a terrible situation, and she did something ethically problematic, something that is contrary to her moral character. She deeply regrets the circumstances in which she had to act. IV. Virtue Ethics A virtue ethicist has insight into how one should go about deciding what to do in a moral tragedy, although virtue ethics may not be as helpful as one may hope. The goal of the virtuous military physician in Battlefield Triage is to adopt the best course of action or the action that she feels she ought to do, all things considered. This does not make her choice devoid of serious wrongdoing—a decision must be made, but that does not make it just. The virtuous military physician will approach the situation with courage, responsibility, and insight. She will think about the decision carefully, wisely, and conscientiously; she will weigh the goods and harms of the choices before her, in conjunction with a proper conception of the good life, human worth, and understanding of her obligations to others—including chain of command, fellow soldiers, and the medical community. She is attuned to the value of human life and has a reasonable idea of the various ways her decisions will affect others. She recognizes that she is in this non-ideal situation through no fault of her own: she is not the one fighting in battles; she is serving her country as a physician, whose job it is to save lives, treat everyone justly, and promote military objectives. She regrets the decision she is forced to make in battlefield triage, acting “with immense regret and pain,” Hursthouse explains, “instead of indifferently or gladly.”[23] This is because, no matter what decision is made, the virtuous military physician “does something terrible or horrible,” something she otherwise would not do and is contrary to her values.[24] V. A Resolvable Moral Tragedy Instead of asking whether there is a morally right decision, in which a decision is morally blameless and above reproach, the virtue ethicist asks whether there is a decision with a convincing rationale, knowing that a decision can have a clear rationale but still be morally tragic. It is perfectly reasonable to think that different virtuous persons will arrive at different courses of action: “two virtuous agents, in the same situation,” Hursthouse writes, “may act differently” in irresolvable moral tragedies, in cases in which there is no clear course of action.[25] Because a person must act in a moral tragedy, one goal is to identify reasons for choosing the chosen action. Some decisions are clearly indefensible—treating neither the compatriot soldier nor the enemy combatant in Battlefield Triage would be wrong—and some decisions are more problematic than others. If the military physician selects to treat the soldier because she does not like the enemy combatant’s skin color, such a reason would be deeply problematic. But much of the debate over how to act in a moral tragedy is not over clearly indefensible or problematic criteria. Instead, the literature is largely about different standards or implementations of justice. Some scholars defend nation-impartial triage as right, while others defend nation-aware triage as right, and each argues that the other side is promoting an unjust or otherwise wrong solution to Battlefield Triage. We suggest that Battlefield Triage is a resolvable moral tragedy and that virtue ethics offers convincing reasons to prefer the treatment of the compatriot soldier rather than the enemy combatant on the grounds of national identity. Virtues are integral to living a good life, a flourishing life, but as Aristotle observed long ago, human beings are inherently social, interdependent and interconnected in profound ways.[26] This goes beyond the obvious fact that we need each other to survive day to day (one person makes clothes, another farms, and another makes tools); the claim is that a good or flourishing life depends in large part on one’s social network or community. This is why many of Aristotle’s moral virtues are other facing: justice, friendship, generosity, and magnanimity, to name a few. Courage, a typically self-facing virtue, is understood by Aristotle to be the virtue that regards one’s fear of death in battle, a battle fought on behalf of one’s city.[27] All of this remains true today. Namely, there is an important sense in which our community matters to our lives: it is easier to live a good, flourishing life if one is part of a good, flourishing community. Our community is made up of smaller groups, and it is more accurate to say that we are simultaneous members of different groups within a broader community. A person may be part of a family, friend group, research team, large state university, city, state, and nation. Groups can function well or not, as we all have experienced, and this suggests that there are virtues or excellences that groups can instantiate. Good groups are unified in purpose, with each member doing their duty alongside others for the attainment of that purpose. Good groups manifest solidarity among their members. Although Aristotle does not list solidarity as a virtue, a number of modern-day virtue ethicists have begun examining how group solidarity can be a virtue that contributes to a good or flourishing life.[28] Solidarity is not conceptualized as an individual virtue, a virtue possessed by a person in isolation of others; instead, it is a collective virtue, a virtue that is shared among members of a defined group with particular ends.[29] “A group has solidarity to the extent that its members are disposed to: (1) share values, aims, or goals; (2) care about those values, aims, or goals; (3) act in accordance with those values, aims, or goals; (4) trust the testimony of other group members with respect to those values, aims, and goals; and (5) feel a sense of belonging to the group.”[30] The virtue of collective or group solidarity involves individuals having special concern for each other, shared aims and values, trust, loyalty, and a sense of belonging with these specific others. There is a oneness to the group in the pursuit of a definite goal or purpose, involving mutual support and affirmation of each member. As such, the group has ends and goods above and beyond the good of each individual person. Sometimes solidarity requires personal sacrifice for the collective (for example, a father sacrificing food so his child can eat). The virtue of collective or group solidarity is important to the military and medical community at every level, and for clear reasons. In the military, there is a clear hierarchy of command, unity of purpose and end, mutual trust and support in complex settings, and so on. Soldiers need to know they can count on one another, and solidarity grounds a soldier’s ability to trust others and be assured of mutual aid. In medicine, solidarity maintains self-regulation of the profession, shared values and goals, as well as public support, not to mention that day-to-day operations require physician trust, engagement, and effort toward the ends of clinical care. Physicians need to work together, along with others, in pursuit of health, and disunity is sowed when there is mistrust, selfishness, or disengagement among the healthcare team and organization. Importantly, just as we are all members of various groups and hence may manifest group solidarity in different settings, the virtuous military physician instantiates collective solidarity with both the medical profession and the military. Her dual loyalty contributes to the moral difficulty of acting in Battlefield Triage. The military physician has competing obligations to distinct groups and cannot satisfy all obligations in Battlefield Triage. Solidarity with the military supports the consideration of favoring the soldier for reasons of national identity, whereas solidarity with the medical community does not. Something has to give, which is why it is a moral tragedy. The virtuous military physician, therefore, must weigh the costs of each course of action. To fulfill her obligations to the medical community would require that she does not use nationality and other non-medical considerations in Battlefield Triage. Since the soldier and enemy combatant are equally injured, justice would demand a random process, perhaps a flip of the coin. Although this may satisfy obligations the military physician has to the medical community, this would be costly to the physician’s military group. If word gets out that the physician decides who to treat based on a coin toss, soldiers, families, and citizens may become frustrated and angry. Soldier morale may go down if it becomes known that a coin flip led to the preventable death of a soldier and the saving of an enemy combatant who had killed (or attempted to kill) other soldiers. As Gross highlights, military solidarity involves a mutual aid promise that military personnel promise to help one another.[31] A military physician is part of the military and, as such, is part of the mutual aid promise, which would appear to be violated if the physician flips a coin. Treating a member of one’s own team may be psychologically more beneficial than treating an enemy combatant and may lead to less moral distress.[32] Finally, treating soldiers rather than enemy combatants promotes broader military and social aims, including returning soldiers to health, maintaining unity of purpose, and minimizing community suffering from a soldier’s death. Favoring members of one’s group, that is, triage based on nationality in Battlefield Triage, would fulfill obligations of military group loyalty, which is contrary to the values and duties of medicine. It does not seem as though showing favoritism in this particular situation is very costly to the medical community or general public, but this is because there is recognition that the physician is in the military. Medicine is impartial to non-medical indications partly because of fairness and to promote public trust in medicine. However, Battlefield Triage is unique, as medicine is being practiced in a non-public, wartime setting. In ordinary circumstances, a patient’s identity is irrelevant, and physicians ought not play favorites. Since Battlefield Triage is not an ordinary circumstance, decisions based on patient identity may not undermine public trust in medicine. In addition, it is contestable that fairness in Battlefield Triage requires that no consideration be paid to one’s nationality. Fairness is about giving each person their due, what is owed to them, and the case can be made that soldiers who place themselves in danger for the sake of the common good or a just cause are owed special attention when they suffer harm in the line of duty. In other words, soldiers voluntarily undergo risk to themselves for the greater good, and society owes them for this sacrifice. This plausibly includes preferential treatment in a situation such as Battlefield Triage. So, while the medical community affirms justice demands non-preferential treatment, the military community can affirm the opposite. The demands of fairness are unclear at best or in conflict in this situation: demands of physician justice decry favoritism, while demands of military justice support favoritism. Triage not based on nationality is arguably unfair and triage based on nationality may not undermine public trust, after all. All things considered, there is a clear rationale for favoring nationality-based preferential treatment in Battlefield Triage. Adopting a nationality-based preference in this situation is more defensible than not. This does not make such a decision ethically right or just. Preference based on nationality is the least bad decision, but it is not morally blameless. It involves one in a serious moral wrong, a wrong otherwise avoided and contrary to one’s character. The virtuous military physician is in a situation in which obligations conflict, and we disagree with Gross, who posits that care of fellow soldiers “is important to the near exclusion of all else.”[33] Gross fails to appreciate the collective virtue of solidarity as applied to those in medicine. The military physician has duties to fellow soldiers but also to fellow physicians, to the medical community, and humanity. To favor a soldier on grounds of nationality violates her duties and responsibilities to this latter group. She is involved in a moral tragedy and can only seek the most just action given the circumstances, yet, at least in virtue ethics, the action remains far from blameless. CONCLUSION We argue that Battlefield Triage is a moral tragedy, meaning that it is a situation in which there is no morally blameless decision and that the demands of justice cannot be satisfied. As such, the virtuous military physician incurs a moral cost to acting as she does—there is a moral residue. However, despite being a moral tragedy, there are clear reasons to act in favor of treating one’s own, considering group solidarity. As such, these kinds of tragedies are resolvable: virtuous military physicians should favor treatment of their own, although they would do so with sorrow. - [1] Militaries set forth medical rules of eligibility or guidelines used to determine whether a person qualifies for specific medical interventions or treatments in certain circumstances, and these guidelines are binding for a military physician. For example, despite opposition from medical organizations, militaries have adopted reverse triage guidelines for military physicians to follow. For ethical discussion, see Falzone, Elisabeth, P. Pasquier, C. Hoffmann, O. Barbier, M. Boutonnet, A. Salvadori, A. Jarrassier, J. Renner, B. Malgras, and S. Mérat. "Triage in military settings." Anaesthesia Critical Care & Pain Medicine 36, no. 1 (2017): 43-51. https://doi.org/10.1016/j.accpm.2016.05.004 [2] There are issues that are related to this, including the triage of civilians and allied soldiers. We set related issues aside for purposes of this paper [3] American Medical Association, Code of Medical Ethics: Current Opinions with Annotations, 2004–2005 ed. (Chicago, IL: AMA, 2004), 300. [4] American Medical Association, Code of Medical Ethics: Current Opinions with Annotations, 2004–2005 ed. (Chicago, IL: AMA, 2004), 300. [5] This is termed the “dual loyalty” dilemma in military medicine and has been described at length elsewhere: Institute of Medicine (US) Board on Health Sciences Policy. Military Medical Ethics: Issues regarding Dual Loyalties: Workshop Summary. Washington (DC): National Academies Press (US); 2008. Toward a Framework for Resolving Dual Loyalties. Available from: https://www.ncbi.nlm.nih.gov/books/NBK214853/ [6] See Kenneth G. Swan and K.G. Swan, Jr., “Triage: The Past Revisited,” Military Medicine 161:8 (1996): 448–452. https://doi.org/10.1093/milmed/161.8.448; Jerome A. Singh, “American Physicians and dual loyalty obligations in the ‘war on terror,’” BMC Medical Ethics 4.4 (2003): 1–10. https://doi.org/10.1186/1472-6939-4-4; Beam, Thomas E. "Medical Ethics on the Battlefield." Military Medical Ethics: Sect. IV. Medical ethics in the military. Medical ethics on the battlefield: the crucible of military medical ethics 2 (2003): 369-402; Hereth, Blake. "Health justice for unjust combatants." Journal of Military Ethics 20, no. 1 (2021): 67-81. https://doi.org/10.1080/15027570.2021.1949782. [7] See Adams, Marcus P. "Triage priorities and military physicians." In Physicians at war: The dual-loyalties challenge, pp. 215-236. Dordrecht: Springer Netherlands, 2008. Gross, Michael L. "Comradery, community, and care in military medical ethics." Theoretical medicine and bioethics 32 (2011): 337-350. https://doi.org/10.1007/s11017-011-9189-6. Gross, Michael L. "The limits of impartial medical treatment during armed conflict." In Military medical ethics for the 21st century, pp. 71-84. Routledge, 2016. [8] World Medical Association, WMA Declaration of Lisbon on the Rights of the Patient. 5 December 2022, https://www.wma.net/policies-post/wma-declaration-of-lisbon-on-the-rights-of-the-patient/ [9] Geneva Convention for the Amelioration of the Condition of Wounded, Sick in Armed Forces in the Field. 12 August 1949. https://www.un.org/en/genocideprevention/documents/atrocity-crimes/Doc.30_GC-I-EN.pdf. [10] List, Justin M. "Medical neutrality and political activism: physicians' roles in conflict situations." In Physicians at war: The dual-loyalties challenge, pp. 237-253. Dordrecht: Springer Netherlands, 2008. 240 [11] Beauchamp, T., and J. Childress. 2013. Principles of Biomedical Ethics, 7th ed. Oxford, United Kingdom: Oxford University Press. [12] Adams, Marcus P. "Triage priorities and military physicians." In Physicians at war: The dual-loyalties challenge, pp. 215-236. Dordrecht: Springer Netherlands, 2008. [13] Gross, "Comradery, community, and care in military medical ethics," 347. [14] Gross, “Comradery, community, and care in military medical ethics,” 349. [15] Gross, Michael L. "When medical ethics and military ethics collide." Narrative inquiry in bioethics 13, no. 3 (2023): 199-204. 202 https://dx.doi.org/10.1353/nib.2023.a924191 [16] Our argument draws on virtue ethics, from which care ethics derives, and it is worth clarifying how our argument relates to Gross’s. We do not think that the virtue of friendship grounds triage decisions, for we think it is unlikely that the physician and wounded soldier are friends. Instead, as explained below, we think the collective virtue of group solidarity better captures the moral significance of group loyalty and that Gross would agree with us. But since military physicians are part of distinct groups, with competing obligations, the military physician will be forced to sacrifice a value in battlefield triage cases. In other words, we think Gross downplays the dual group membership of a military physician. [17] List,”Medical neutrality and political activism,” 250. [18] Adams,”Triage priorities and military physicians,” 235. [19] London, Leslie, Leonard S. Rubenstein, Laurel Baldwin-Ragaven, and Adriaan Van Es. "Dual loyalty among military health professionals: human rights and ethics in times of armed conflict." Cambridge Quarterly of Healthcare Ethics 15, no. 4 (2006): 381-391. 383. [20] Hursthouse, R. On Virtue Ethics. OUP 1999. 74 [21] Nussbaum, Martha C. "The costs of tragedy: Some moral limits of cost-benefit analysis." The Journal of Legal Studies 29, no. S2 (2000): 1005-1036, 1007. [22] De Wijze, S. (2005). Tragic-remorse–the anguish of dirty hands. Ethical theory and moral practice, 7(5), 453-471, 457. https://doi.org/10.1007/s10677-005-6836-x [23] Hursthouse, 73 [24] Hursthouse, 81 [25] Hursthouse, 72 [26] Aristotle, Politics 1253a8. Reeve, C. D. C., Indianapolis: Hackett Publishing Co., 2017 [27] Aristotle, Nicomachean Ethics. III.6.114a, 34-35. 2002, Nicomachean Ethics, Christopher Rowe (trans.), Oxford: Oxford University Press [28] Byerly, T. Ryan, and Meghan Byerly. "Collective virtue." The Journal of Value Inquiry 50, no. 1 (2016): 33-50. https://doi.org/10.1007/s10790-015-9484-y; Federico, Veronica. "Conclusion: solidarity as a public virtue." Solidarity as a Public Virtue (2018): 495-542. https://doi.org/10.5771/9783845290058. Rehg, William. "Solidarity and the common good: An analytic framework." Journal of Social Philosophy 38, no. 1 (2007): 7-21. https://doi.org/10.1111/j.1467-9833.2007.00363.x [29] Byerly and Byerly. "Collective virtue." 43 [30] Battaly, Heather. "Solidarity: Virtue or vice?." In Social virtue epistemology, pp. 303-324. Routledge, 2022. 304 [31] Ibid., 2011: 341 [32] It might be thought that displaying altruism by helping an enemy combatant at the expense of one’s fellow soldier may be psychologically satisfiying. For evidence that military physicians find it difficult to treat enemy combatants, see Lundberg, Kristina, Sofia Kjellström, Anders Jonsson, and Lars Sandman. "Experiences of Swedish military medical personnel in combat zones: adapting to competing loyalties." Military medicine 179, no. 8 (2014): 821-826. https://doi.org/10.7205/MILMED-D-14-00038. Lamblin, Antoine, Clément Derkenne, Marion Trousselard, and Marie-Ange Einaudi. "Ethical challenges faced by French military doctors deployed in the Sahel (Operation Barkhane): a qualitative study." BMC Medical Ethics 22 (2021): 1-13. https://doi.org/10.1186/s12910-021-00723-2 [33] Ibid., 2011: 344. (shrink)

The prefrontal cortex is widely believed to play an important role in facilitating people's ability to switch performance between different tasks. We present a biologically‐based computational model of prefrontal cortex (PFC) that explains its role in task switching in terms of the greater flexibility conferred by activation‐based working memory representations in PFC, as compared with more slowly adapting weight‐based memory mechanisms. Specifically we show that PFC representations can be rapidly updated when a task switches via a dynamic gating mechanism based (...) on a temporal‐differences reward‐prediction learning mechanism. Unlike prior models of this type, the present model develops all of its internal representations via learning mechanisms as shaped by the demands of continuous periodic task switching. This advance opens up a new domain of research into the interactions between working memory task demands and the representations that develop to meet them. Results on a version of the Wisconsin card sorting task are presented for the full model and a number of comparison networks that test the importance of various model features. Furthermore, we show that a lesioned model produces perseverative errors like those seen in frontal patients. (shrink)

Between 1937 and 1940 the Taxonomic Principles Committee of the newly-founded Association for the Study of Systematics in Relation to General Biology (later the Systematics Association) attempted to define the relationship between evolution and taxonomy. The people who took part in the discussion were W.T. Calman, C.R.P. Diver, J.S.L. Gilmour, J.S. Huxley, W.D. Lang, J.R. Norman, R. Melville, O.W. Richards, M.A. Smith, T.A. Sprague, H. Hamshaw Thomas, W.B. Turrill, B.P. Uvarov, A.F. Watkins, E.I. White, and A.J. Wilmott. Most of the (...) botanists asserted that taxonomy was a practical matter to be kept distinct from phylogenetic speculation, and most of the zoologists insisted that taxonomists must strive to represent evolution if they wished to be scientific. The disagreement seemed to be hardening rather than approaching compromise when World War Two stopped the committee's work. (shrink)

Background: Electroconvulsive therapy is one of the most effective treatments for major depressive disorder. Recently, there has been increasing attention to evaluate the effect of ECT on resting-state functional magnetic resonance imaging. This study aims to compare rs-fMRI of depressive disorder patients with healthy participants, investigate whether pre-ECT dynamic functional network connectivity network estimated from patients rs-fMRI is associated with an eventual ECT outcome, and explore the effect of ECT on brain network states.Method: Resting-state functional magnetic resonance imaging data were (...) collected from 119 patients with depression or depressive disorder, and 61 healthy participants, with an age mean of 52.25 years old. The pre-ECT and post-ECT Hamilton Depression Rating Scale were 25.59 ± 6.14 and 11.48 ± 9.07, respectively. Twenty-four independent components from default mode and cognitive control network were extracted, using group-independent component analysis from pre-ECT and post-ECT rs-fMRI. Then, the sliding window approach was used to estimate the pre-and post-ECT dFNC of each subject. Next, k-means clustering was separately applied to pre-ECT dFNC and post-ECT dFNC to assess three distinct states from each participant. We calculated the amount of time each subject spends in each state, which is called “occupancy rate” or OCR. Next, we compared OCR values between HC and DEP participants. We also calculated the partial correlation between pre-ECT OCRs and HDRS change while controlling for age, gender, and site. Finally, we evaluated the effectiveness of ECT by comparing pre- and post-ECT OCR of DEP and HC participants.Results: The main findings include depressive disorder patients had significantly lower OCR values than the HC group in state 2, where connectivity between cognitive control network and default mode network was relatively higher than other states, Pre-ECT OCR of state, with more negative connectivity between CCN and DMN components, is linked with the HDRS changes. This means that those DEP patients who spent less time in this state showed more HDRS change, and The post-ECT OCR analysis suggested that ECT increased the amount of time DEP patients spent in state 2.Conclusion: Our finding suggests that dynamic functional network connectivity features, estimated from CCN and DMN, show promise as a predictive biomarker of the ECT outcome of DEP patients. Also, this study identifies a possible underlying mechanism associated with the ECT effect on DEP patients. (shrink)

On Humour and the Comic in the Hebrew Bible. Edited by Y. T. Radday and A. Brenner.The Trouble With Kings: The Composition of rhe Book of Kings in the Deuteronomistic History. By Steven L. McKenzie.Sacred Space: An Approach to the Zheology of the Epistle to the Hebrews. By Marie E. Isaacs.Fourth Ezra: A Commentary on the Book of Fourth Ezra. By Michael Edward StonePaul the Convert: iShe Apostolate and Apostasy of Saul the Pharisee. By Alan F. Segal.Creative Biblical Exegesis: (...) Christian and Jewish Hermeneutics through the Centuries. Edited by Benjamin Uffenheimer and Henning Graf Reventlow.The Hope of the Early Church: A Handbook of Patristic Escharology. By Brian E. Daley.The Emergence of the Laity in the Early Church. By Alexandre Faivre, translated by David Smith.Pastoral Life and Practice in the Early Church. By Carl A. Volz.The Making of the Creeds. By Frances Young.La correzione fratenia in s. Agosrino. By Agostino Clerici.Beaup and Revelation in the Thought of St Augustine. By Carol Harrison.Grace, Politics and Desire. Edited by Hugo Meynell.Boerhius and Aquinas. By Ralph McInerny.The Weight of Glory. A Vision and Practice for Christian Faith: The Future of Liberal Theology. Edited by D. W. Hardy and P. H. Sedgwick.Atonenrent and Incarnation. By Vernon White.Tragic Method and Tragic Theology: Evil in Contemporary Drama and Religious Thought. By L. D. Bouchard.Parmenides of Elea, Fragments: A Text and Translation, with an Introduction. By David Gallop.Language, Thought and Falsehood in Ancient Greek Philosophy. By Nicholas Denyer.Weakness of the Will. By Justin Gosling.Knowledge and the Sciences in Medieval Philosophy. Vol. I, edited by Monica Asztalos, John E. Murdoch and Ilkka Niiniluoto.Episcopal Power and Norenrine Sociev. 1000–1320. By George W. Dameron.Matins, Lauds and Vespers for St David's Day. By Owain Tudor Edwards.More's ‘Utopia’. By Dominic Baker‐Smith.Frontiers of Heresy: The Spanish Inquisitionfrom the Basque Lands to Sicily. By William Monter.Inquisition and Society in the Kingdom of Valencia, 1478–1834, By Stephen Haliczer.The Fear of Hell: Images of Damnation and Salvation in Early Modern Europe. By Piero Camporesi, translated by Lucinda Byatt.Lucrecia's Dreams: Politics and Prophecy in Sixteenth‐Centun Spain. By Richard L. Kagan.Heresy and Mysticism in Sixteenth‐Century Spain: The Alumbrados. By Alastair Hamilton.Japan's Encounter with Christianiry: The Catholic Mission in Pre‐Modern Japan. By Neil S. Fujita.Galileo, Bellannine and the Bible. By Richard J.Augustine Baker's Inner Light: A Study in English Recusant Spirituality. By James Gaffney.The Prorestarit Evaqelical Awakening. By W. R. Ward.The Study of Anglicanism. Edited by Stephen Sykes and John Booty.The Anglican Tradition: A Handbook of Sources. Edited by G. R. Evans and J. Robert Wright.The Restoration Church of England, 1646‐1689. By John Spurr.Awash in a Sea of Faith: Christianizing the American People. By Jon Butler.A Woman Styled Bold: The Life of Cornelia Connelly, 1809–1879. By Radegunde Flaxman.Cane Ridge: America's Pentecost. By Paul K. Conkin.Revivalism and Social Change: Christianio, Nation Building and the Market in the Nineteenth‐Century United States. By George M. Thomas.Church and State: The English Experience. By Adrian Hastings.Evelyn Underhill: Artist of the Infinite Life. By Dana Greene.Northern Ireland: Fairh and Faction. By Maurice Irvine.The Tragedy of Belief: Division, Politics, arid Religion in Ireland. By John Fulton.Shattered Vows: Exodus from the Priesthood. By David Rice.Making Saints: Inside the Vatican: Who Become Saints, Who Do Not, and Why. By Kenneth L. Woodward.Ecclesiae Memoria: Miscellanea in onorr del R. P. Josef Metzler, O. M. I. Edited by Willi Henkel. (shrink)

An animal confronts numerous challenges when constructing an optimal navigational route. Spatial representations used for path optimization are likely constrained by critical environmental factors that dictate which neural systems control navigation. Multiple coding schemes depend upon their ecological relevance for a particular species, particularly when dealing with the third, or vertical, dimension of space.

Throughout the biological and biomedical sciences there is a growing need for, prescriptive ‘minimum information’ (MI) checklists specifying the key information to include when reporting experimental results are beginning to find favor with experimentalists, analysts, publishers and funders alike. Such checklists aim to ensure that methods, data, analyses and results are described to a level sufficient to support the unambiguous interpretation, sophisticated search, reanalysis and experimental corroboration and reuse of data sets, facilitating the extraction of maximum value from data sets (...) them. However, such ‘minimum information’ MI checklists are usually developed independently by groups working within representatives of particular biologically- or technologically-delineated domains. Consequently, an overview of the full range of checklists can be difficult to establish without intensive searching, and even tracking thetheir individual evolution of single checklists may be a non-trivial exercise. Checklists are also inevitably partially redundant when measured one against another, and where they overlap is far from straightforward. Furthermore, conflicts in scope and arbitrary decisions on wording and sub-structuring make integration difficult. This presents inhibit their use in combination. Overall, these issues present significant difficulties for the users of checklists, especially those in areas such as systems biology, who routinely combine information from multiple biological domains and technology platforms. To address all of the above, we present MIBBI (Minimum Information for Biological and Biomedical Investigations); a web-based communal resource for such checklists, designed to act as a ‘one-stop shop’ for those exploring the range of extant checklist projects, and to foster collaborative, integrative development and ultimately promote gradual integration of checklists. (shrink)

Executive functions (EFs) and impulsivity are dimensions of self-regulation that are both related to psychopathology. However, self-report measures of impulsivity and laboratory EF tasks typically display small correlations, and existing research indicates that impulsivity and EFs may tap separate aspects of self-regulation that independently statistically predict psychopathology in adulthood. However, relationships between EFs, impulsivity, and psychopathology may be different in childhood compared to adulthood. Here, we examine whether these patterns hold in the baseline assessment of the Adolescent Brain and Cognitive (...) Development (ABCD) sample, a national sample of over 11,000 children (including 749 twin pairs) ages 9–10 years. We examine the phenotypic and genetic relationships among latent variables for different components of EFs and multiple facets of impulsivity. Additionally, we assess how EFs and impulsivity relate to composite measures and latent variables of psychopathology derived from parent report. EFs were weakly correlated with impulsivity, and the strength varied by impulsivity facet, emphasizing their separability. We did not identify significant genetic and environmental correlations between EFs and impulsivity. Moreover, controlling for their small relationships with each other, both EFs and some facets of impulsivity statistically predicted an Externalizing factor, attention problems, and social problems, and twin analyses suggested these relationships were genetic in origin. These findings indicate that EFs and impulsivity represent phenotypically and genetically separable aspects of self-regulation that are both transdiagnostic correlates of psychopathology in childhood. (shrink)

Since 1983, legislators and advocates have introduced Land Access Policy Incentives in twenty of the fifty United States. These bills share a demographic goal: to fund land rental or purchase for young and beginning farmers and ranchers. States’ efforts to facilitate land access are part of a global movement to support farmers’ entry into agriculture and to resist farmers’ increasing exclusion from land. We examine the policy creation processes of nine states to describe how coalitions and government leaders are translating (...) their values around land access barriers into policy tools whose political appeal is broad. The bills often pass unanimously, and enrollments are strong: about 2,000 young and beginning US farmers and ranchers will purchase or rent farms this year through a few states’ land access policy programs. We trace the themes from interviews with 66 of the bills’ authors and advocates, and their documentation and media coverage, to demonstrate the values that bipartisan coalitions enlist to construct successful bills and the compromises that make them politically feasible. The coalitions’ values turn on the threats of rising land costs, farm expansion or consolidation, and land conversion out of agriculture. As a group, the policies serve broadacre farming operations while leaving specialty crop farms largely unserved. Two states have endeavored to include all farmers of color among their policies’ beneficiaries. Our findings demonstrate tradeoffs of states’ current Land Access Policy Incentives and suggest next steps for research and advocacy to inform policy development to support next generation farming opportunities. (shrink)

Late in 1990, the Center for the Study of Ethics in the Professions at Illinois Institute of Technology (lIT) received a grant of more than $200,000 from the National Science Foundation to try a campus-wide approach to integrating professional ethics into its technical curriculum.! Enough has now been accomplished to draw some tentative conclusions. I am the grant's principal investigator. In this paper, I shall describe what we at lIT did, what we learned, and what others, especially philosophers, can learn (...) from us. We set out to develop an approach that others could profitably adopt. I believe that we succeeded. (shrink)

The aim of the present investigation was to describe and to classify significant ethical problems encountered by the members of the staff during the daily clinical work at a hospital medical department. A set of definitions was prepared for the purpose, including the definition of a 'significant ethical problem'. During a three month period 426 inpatients and 173 outpatients were admitted. Significant ethical problems were encountered during the management of 106 in-patients (25 per cent) and 9 out-patients (5 per cent). (...) No significant difference was found between the frequency of ethical problems in female and male patients, but a positive correlation was noted between the number of problems and the patients' age. The problem types were classified according to a problem list. The results of this investigation suggest that greater attention must be paid to discussions about ethical problems among doctors and other categories of health personnel and that, among others, medical students ought to be taught the analysis of ethical problems. (shrink)

Eddington, A. The decline of determinism.--Heisenberg, W. and others. Dialogue concerning science and philosophical positions.--Sinnott, E. Biology and freedom.--Nuttin, J. The unconscious and freedom.--Nagel, E. Determinism in history.--Ayer, A. J. Freedom and necessity.--Campbell, C. A. Philosophical defence of freedom.--Hare, R. M. Freedom and reason.--Dewey, J. Freedom as a problem.--Sartre, J.-P. Freedom and total responsibility.--Camus, A. Freedom and rebellion.--Rand, A. Freedom and individualism.--Thévenaz, P. Freedom and action.--Luijpen, W. A. Phenomenology of freedom.--Teilhard de Chardin, P. Cosmic freedom.--Jaspers, K. Freedom and society.--Macmurray, J. (...) Freedom in the personal nexus.--Brunner, A. Incarnation of freedom.--Ricoeur, P. Freedom as human creativity.--Finance, J. de. Freedom and existence.--Bibliography (p. 243-251). (shrink)

The purpose of this paper is to describe how Sally Gadow's perspectives on existential advocacy as the moral framework for the nurse–patient relationship were synthesized with a general theory of motivation, self‐determination theory (SDT), to inform the design of a study in which the influence of interpersonal care on the process of tobacco dependence treatment was explored. Consistent with the tenets of existential advocacy, participants who perceived their care providers as interpersonally sensitive and bringing more of their whole selves to (...) the care encounter reported more autonomous motivation and felt competence for stopping smoking. The integration of existential advocacy with SDT, which led to the empirical work in which Gadow's ideas were actualized and her model supported, is described. Study findings are discussed in light of Gadow's philosophical views, and implications for nursing highlighted. (shrink)

The purpose of this research is to investigate the effectiveness of Digital Content Marketing on a Mixed Reality training platform environment with the consideration of online purchase intention through social media. E-commerce today encounters several common issues that cause customers to have reservations to purchase online. With the absence of physical contact points, customers often perceive more risks when making purchase decisions. Furthermore, online retailers often find it hard to engage customers and develop long-term relationships. In this research, a Structural (...) Equation Model is proposed to examine the efficacy of DCM from both immediate and long-term OPI. The results examine whether adopting DCM on an MR training platform environment through social media brings positive results in OPI. Empirical research was carried out through online questionnaires collected in 2021 and 2022. A total of 374 questionnaires were qualified for data analysis in this study, conducted with IBM SPSS and AMOS. The results imply that DCM is critical to stimulating both immediate and long-term OPI. The immediate OPI is positively affected by increasing perceived value through MR in DCM. Regarding the long-term OPI, increased customer engagement with DCM under MR environment can cultivate brand trust and significantly affect the long-term OPI. (shrink)

As interest in working memory is increasing at a rapid pace, an open discussion of the central issues involved is both useful and timely. This new volume compares and contrasts conceptions of working memory, with contributions from proponents of different views.

Since 1983, legislators and advocates have introduced Land Access Policy Incentives in twenty of the fifty United States. These bills share a demographic goal: to fund land rental or purchase for young and beginning farmers and ranchers. States’ efforts to facilitate land access are part of a global movement to support farmers’ entry into agriculture and to resist farmers’ increasing exclusion from land. We examine the policy creation processes of nine states to describe how coalitions and government leaders are translating (...) their values around land access barriers into policy tools whose political appeal is broad. The bills often pass unanimously, and enrollments are strong: about 2,000 young and beginning US farmers and ranchers will purchase or rent farms this year through a few states’ land access policy programs. We trace the themes from interviews with 66 of the bills’ authors and advocates, and their documentation and media coverage, to demonstrate the values that bipartisan coalitions enlist to construct successful bills and the compromises that make them politically feasible. The coalitions’ values turn on the threats of rising land costs, farm expansion or consolidation, and land conversion out of agriculture. As a group, the policies serve broadacre farming operations while leaving specialty crop farms largely unserved. Two states have endeavored to include all farmers of color among their policies’ beneficiaries. Our findings demonstrate tradeoffs of states’ current Land Access Policy Incentives and suggest next steps for research and advocacy to inform policy development to support next generation farming opportunities. (shrink)

Mastery imagery (i.e., images of being in control and coping in difficult situations) is used to regulate anxiety. The ability to image this content is associated with trait confidence and anxiety, but research examining mastery imagery ability's association with confidence and anxiety in response to a stressful event is scant. The present study examined whether trait mastery imagery ability mediated the relationship between confidence and anxiety, and the subsequent associations on performance in response to an acute psychological stress. Participants (N= (...) 130; 55% male;Mage= 19.94 years;SD= 1.07 years) completed assessments of mastery imagery ability and engaged in a standardized acute psychological stress task. Immediately prior to the task, confidence, cognitive and somatic anxiety intensity, and interpretation of anxiety symptoms regarding the task were assessed. Path analyses supported a model whereby mastery imagery ability mediated the relationship between confidence and cognitive and somatic anxiety interpretation. Greater mastery imagery ability and confidence were both directly associated with better performance on the stress task. Mastery imagery ability may help individuals experience more facilitative anxiety and perform better during stressful tasks. Improving mastery imagery ability by enhancing self-confidence may help individuals successfully cope with anxiety elicited during stressful situations. (shrink)

The power of technology to transform religions, science, and political institutions has often been presented as nothing short of revolutionary. Does technology have a similarly transformative influence on societies’ morality? Scholars have not rigorously investigated the role of technology in moral revolutions, even though existing research on technomoral change suggests that this role may be considerable. In this paper, we explore what the role of technology in moral revolutions, understood as processes of radical group-level moral change, amounts to. We do (...) so by investigating four historical episodes of radical moral change in which technology plays a noteworthy role. Our case-studies illustrate the plurality of mechanisms involved in technomoral revolutions, but also suggest general patterns of technomoral change, such as technology’s capacity to stabilize and destabilize moral systems, and to make morally salient phenomena visible or invisible. We find several leads to expand and refine conceptual tools for analysing moral change, specifically by crystallizing the notions of ‘technomoral niche construction’ and ‘moral payoff mechanisms’. Coming to terms with the role of technology in radical moral change, we argue, enriches our understanding of moral revolutions, and alerts us to the depths of which technology can change our societies in wanted and unwanted ways. (shrink)

Drawing on a landscape analysis of existing data-sharing initiatives, in-depth interviews with expert stakeholders, and public deliberations with community advisory panels across the U.S., we describe features of the evolving medical information commons. We identify participant-centricity and trustworthiness as the most important features of an MIC and discuss the implications for those seeking to create a sustainable, useful, and widely available collection of linked resources for research and other purposes.

Formalised knowledge systems, including universities and research institutes, are important for contemporary societies. They are, however, also arguably failing humanity when their impact is measured against the level of progress being made in stimulating the societal changes needed to address challenges like climate change. In this research we used a novel futures-oriented and participatory approach that asked what future envisioned knowledge systems might need to look like and how we might get there. Findings suggest that envisioned future systems will need (...) to be much more collaborative, open, diverse, egalitarian, and able to work with values and systemic issues. They will also need to go beyond producing knowledge about our world to generating wisdom about how to act within it. To get to envisioned systems we will need to rapidly scale methodological innovations, connect innovators, and creatively accelerate learning about working with intractable challenges. We will also need to create new funding schemes, a global knowledge commons, and challenge deeply held assumptions. To genuinely be a creative force in supporting longevity of human and non-human life on our planet, the shift in knowledge systems will probably need to be at the scale of the enlightenment and speed of the scientific and technological revolution accompanying the second World War. This will require bold and strategic action from governments, scientists, civic society and sustained transformational intent. (shrink)

Four pairs of connectionist simulations are presented in which quasi‐regular mappings are computed using localist and distributed representations. In each simulation, a control parameter termed input gain was modulated over the only level of representation that mapped inputs to outputs. Input gain caused both localist and distributed models to shift between regularity‐based and item‐based modes of processing. Performance on irregular items was selectively impaired in the regularity‐based modes, whereas performance on novel items was selectively impaired in the item‐based modes. Thus, (...) the models exhibited double dissociations without separable processing components. These results are discussed in the context of analogous dissociations found in language domains such as word reading and inflectional morphology. (shrink)

The posterior cortex, hippocampus, and prefrontal cortex in the Leabra architecture are specialized in terms of various neural parameters, and thus are predilections for learning and processing, but domain-general in terms of cognitive functions such as face recognition. Also, these areas are not encapsulated and violate Fodorian criteria for modularity. Anderson's terminology obscures these important points, but we applaud his overall message.

Biological evolution provides a creative fount of complex and subtle adaptations, often surprising the scientists who discover them. However, because evolution is an algorithmic process that transcends the substrate in which it occurs, evolution’s creativity is not limited to nature. Indeed, many researchers in the field of digital evolution have observed their evolving algorithms and organisms subverting their intentions, exposing unrecognized bugs in their code, producing unexpected adaptations, or exhibiting outcomes uncannily convergent with ones in nature. Such stories routinely reveal (...) creativity by evolution in these digital worlds, but they rarely fit into the standard scientific narrative. Instead they are often treated as mere obstacles to be overcome, rather than results that warrant study in their own right. The stories themselves are traded among researchers through oral tradition, but that mode of information transmission is inefficient and prone to error and outright loss. Moreover, the fact that these stories tend to be shared only among practitioners means that many natural scientists do not realize how interesting and lifelike digital organisms are and how natural their evolution can be. To our knowledge, no collection of such anecdotes has been published before. This paper is the crowd-sourced product of researchers in the fields of artificial life and evolutionary computation who have provided first-hand accounts of such cases. It thus serves as a written, fact-checked collection of scientifically important and even entertaining stories. In doing so we also present here substantial evidence that the existence and importance of evolutionary surprises extends beyond the natural world, and may indeed be a universal property of all complex evolving systems. (shrink)

In this review, we describe some of the central philosophical issues facing origins-of-life research and provide a targeted history of the developments that have led to the multidisciplinary field of origins-of-life studies. We outline these issues and developments to guide researchers and students from all fields. With respect to philosophy, we provide brief summaries of debates with respect to (1) definitions (or theories) of life, what life is and how research should be conducted in the absence of an accepted theory (...) of life, (2) the distinctions between synthetic, historical, and universal projects in origins-of-life studies, issues with strategies for inferring the origins of life, such as (3) the nature of the first living entities (the “bottom up” approach) and (4) how to infer the nature of the last universal common ancestor (the “top down” approach), and (5) the status of origins of life as a science. Each of these debates influences the others. Although there are clusters of researchers that agree on some answers to these issues, each of these debates is still open. With respect to history, we outline several independent paths that have led to some of the approaches now prevalent in origins-of-life studies. These include one path from early views of life through the scientific revolutions brought about by Linnaeus (von Linn.), Wöhler, Miller, and others. In this approach, new theories, tools, and evidence guide new thoughts about the nature of life and its origin.We also describe another family of paths motivated by a” circularity” approach to life, which is guided by such thinkers as Maturana & Varela, Gánti, Rosen, and others. These views echo ideas developed by Kant and Aristotle, though they do so using modern science in ways that produce exciting avenues of investigation. By exploring the history of these ideas, we can see how many of the issues that currently interest us have been guided by the contexts in which the ideas were developed. The disciplinary backgrounds of each of these scholars has influenced the questions they sought to answer, the experiments they envisioned, and the kinds of data they collected. We conclude by encouraging scientists and scholars in the humanities and social sciences to explore ways in which they can interact to provide a deeper understanding of the conceptual assumptions, structure, and history of origins-of-life research. This may be useful to help frame future research agendas and bring awareness to the multifaceted issues facing this challenging scientific question. (shrink)