In this essay we aim to present some considerations regarding a minimal but concrete notion of agency and goal-directed behavior that are useful for characterizing biological systems at different scales. These considerations are a particular perspective, bringing together concepts from dynamical systems, combinatorial problem-solving, and connectionist learning with an emphasis on the relationship between parts and wholes. This perspective affords some ways to think about agents that are concrete and quantifiable, and relevant to some important biological issues. Instead of advocating (...) for a strict definition of minimally agential characteristics, we focus on how (even for a modest notion of agency) the agency of a system can be more than the sum of the agency of its parts. We quantify this in terms of the problem-solving competency of a system with respect to resolution of the frustrations between its parts. This requires goal-directed behavior in the sense of delayed gratification, i.e., taking dynamical trajectories that forego short-term gains (or sustain short-term stress or frustration) in favor of long-term gains. In order for this competency to belong to the system (rather than to its parts or given by its construction or design), it can involve distributed systemic knowledge that is acquired through experience, i.e., changes in the organization of the relationships among its parts (without presupposing a system-level reward function for such changes). This conception of agency helps us think about the ways in which cells, organisms, and perhaps other biological scales, can be agential (i.e., more agential than their parts) in a quantifiable sense, without denying that the behavior of the whole depends on the behaviors of the parts in their current organization. (shrink)

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)

This paper promotes critical realism as a suitable and fruitful philosophical foundation for the development and implementation of urban digital twins. The proliferation of a-theoretical digital twin research and practices, not declaring their philosophical positions, is threatening the scientific soundness of this new paradigm and offers little evidence for reflecting on the knowledge it produces. To address this issue, first, this paper uses focus group discussions to explore digital twin experts’ perceptions of digital twin best practices for urban management and (...) uncover the philosophical worldviews underlying these perceptions. A philosophical worldview is a general orientation about the world that is described in terms of ontological and epistemological assumptions and views on human nature. The inferred philosophical worldviews are then compared with critical realism principles, supporting the argument that critical realism provides a suitable philosophical foundation for digital twin practices in urban management envisaged by participating experts, as well as enhancing current forms of digital twin practice. (shrink)

This paper examines the issue of ethics policy in organizations. While the actions of top management may be the single most important factor in fostering corporate behaviour of a high ethical standard, there should be policy where policy is needed. The perceptions of three managerial groups — top- marketing- and purchasing managers — are compared regarding firstly, whether they see a need for policy on a range of ethically contentious issues, and secondly whether they believe there is policy covering these (...) issues in their own organizations. No significant differences between the three groups of managers were found, either with regard to their perceptions of needs for policy, or as far as the existence thereof is concerned. However, an overall comparison of need for policy and the existence of policy showed a significant difference on the scenarios presented to respondents. Furthermore, the study identifies grey areas of ethics in business where managers believe policy is needed, but is not perceived to exist. The use of an ethics policy matrix in organizations is suggested as a practcial tool for the examination of ethically contentious issues. (shrink)