​I use network models to simulate social learning situations in which the dominant group ignores or devalues testimony from the marginalized group. I find that the marginalized group ends up with several epistemic advantages due to testimonial ignoration and devaluation. The results provide one possible explanation for a key claim of standpoint epistemology, the inversion thesis, by casting it as a consequence of another key claim of the theory, the unidirectional failure of testimonial reciprocity. Moreover, the results complicate the understanding (...) and application of previously discovered network epistemology effects, notably the Zollman effect (Zollman 2007, 2010). (shrink)

Diversity of practice is widely recognized as crucial to scientific progress. If all scientists perform the same tests in their research, they might miss important insights that other tests would yield. If all scientists adhere to the same theories, they might fail to explore other options which, in turn, might be superior. But the mechanisms that lead to this sort of diversity can also generate epistemic harms when scientific communities fail to reach swift consensus on successful theories. In this paper, (...) we draw on extant literature using network models to investigate diversity in science. We evaluate different mechanisms from the modeling literature that can promote transient diversity of practice, keeping in mind ethical and practical constraints posed by real epistemic communities. We ask: what are the best ways to promote an appropriate amount of diversity of practice in scientific communities? (shrink)

I analyze the role of infinite idealizations used in the renormalization group (RG hereafter) method in explaining universality across microscopically different physical systems in critical phenomena. I argue that despite the reference to infinite limit systems such as systems with infinite correlation lengths during the RG process, the key to explaining universality in critical phenomena need not involve infinite limit systems. I develop my argument by introducing what I regard as the explanatorily relevant property in RG explanations: linearization* property; I (...) then motivate and prove a proposition about the linearization* property in support of my view. As a result, infinite limit systems in RG explanations are dispensable. (shrink)

When solving a complex problem in a group, should group members always choose the best available solution that they are aware of? In this paper, I build simulation models to show that, perhaps surprisingly, a group of agents who individually randomly follow a better available solution than their own can end up outperforming a group of agents who individually always follow the best available solution. This result has implications for the feminist philosophy of science and social epistemology.

Liver transplantation (LT) activities during the COVID-19 pandemic have been curtailed in many countries. The impact of various policies restricting LT on outcomes of potential LT candidates is unclear. We studied all patients on the nationwide LT waitlists in Hong Kong and Singapore between January 2016 and May 2020. We used continuous time Markov chains to model the effects of different scenarios and varying durations of disruption on LT candidates.

In 1984 scientists in the former Soviet Union called for an ecological civilization. This idea was taken up in 1987 in China by Ye Qianji. Subsequently the notion of ecological civilization was promoted by the deputy director of China’s State Environmental Protection Administration (SEPA), Pan Yue, incorporated into the Central Commission Report to the Communist Party’s 17th Convention in November, 2007, and embraced as one of the key elements in its political guidelines. Characterized as the successor to agricultural and industrial (...) civilization, it is now being promoted as a goal for the whole of humanity in order to avert a global ecological disaster. The success or failure of this project to create an ecological civilization could determine whether humanity survives. But what does it mean to create an ecological civilization? What does ‘civilization’ mean, and then what would it mean to create an ‘ecological’ civilization? This essay seeks to answer this question. (shrink)

The culture of Vietnam (Vietnamese: Văn hoá Việt Nam, chữ Hán: 文化越南) are the customs and traditions of the Kinh people and the other ethnic groups of Vietnam. -/- Originating from the Red River Delta, ancient Vietnamese cultural artifacts, such as the Đông Sơn drums, were found throughout Southeast Asia and South China, suggesting a spread of ancient Viet (the generalized term "Baiyue" i.e. "100 Yue") all the way south to Indonesia.