This article asks whether our moral duties are created by others’ non-compliance and whether we should fulfill them or not. For example, do we need to donate more of our income to eradicate world poverty because billionaires do not donate? If so, how much should we donate? In short, should we make up for others’ defaulting on their moral duties – and if so, how and to what extent? Such situations are called non-ideal circumstances in political philosophy. With the increasing (...) importance of non-ideal theories of justice and ethics, the question of how we should act in non-ideal situations has received more attention in the ethics literature in recent years. This article poses and addresses the question of whether we should take up the slack when others do not comply with their own moral duty. This article examines how consequentialism and contractualism might respond to non-ideal situations of taking up the slack and then defends a contractualist-constructivist approach to dealing with these situations. (shrink)

In Japan, from the pre-war to the post-war period, unique indigenous philosophizing cultures have been nurtured outside academism. The contemporary new philosophical practices which have been recently imported from Europe and North America are welcomed and widespread in Japan because of this indigenous traditional cultural soil cultivated by those local forerunners in the past. In this paper, the 'Life Experience Writing Movement', which was popular from the late Taisho era until the early Showa era, as well as the Science of (...) Thought journal, which was founded by Shunsuke Tsurumi and the other six coteries in 1945 and continued to be published for fifty years until 1996, are discussed. (shrink)

In the bitcoin whitepaper, Satoshi Nakamoto (2008: 2) defines an electronic coin as a chain of digital signatures. Many have since defined a bitcoin as a chain of digital signatures. This latter definition continues to appear in reports from central banks, advocacy centers, and governments, as well as in academic papers across the disciplines of law, economics, computer science, cryptography, management, and philosophy. Some have even used it to argue that what we now call bitcoin is not the real (...) bitcoin. The definition fails, however. This is important because the Chain Definition obscures Satoshi’s solution to a dilemma in the design of electronic cash, as well as the truth about bitcoin’s privacy and fungibility. In this article, I explain why the Chain Definition fails and what Satoshi likely endorsed instead. Along the way, I untangle some issues around bitcoin fungibility and clarify some others around the ontology of digital assets. (shrink)

Disagreements that resist rational resolution, often termed “deep disagreements”, have been the focus of much work in epistemology and informal logic. In this paper, I argue that they also deserve the attention of philosophers of mathematics. I link the question of whether there can be deep disagreements in mathematics to a more familiar debate over whether there can be revolutions in mathematics. I propose an affirmative answer to both questions, using the controversy over Shinichi Mochizuki’s work on the abc (...) conjecture as a potential example of both phenomena. I conclude by investigating the prospects for the resolution of mathematical deep disagreements in virtue-theoretic approaches to informal logic and mathematical practice. (shrink)

On 26 July 2016, Satoshi Uematsu murdered 19 and injured 26 at a caregiving facility in Sagamihara, Japan, making it the country’s worst mass killing since WWII. In this article, I offer an analysis of the Sagamihara 19 massacre. I draw on the work of Julia Kristeva and Emmanuel Levinas to argue that claims about disability experience are insufficient to justify normative projects. In short, disability is normatively ambiguous.