How much should someone contribute to trying to prevent unnecessary deaths and severe hardships? MacAskill, Mogensen, and Ord propose tithing for most of the rich (as measured by income), which has been influential in the effective altruism community. My aim in this article is to contribute, through amending their proposal, to their important project of searching for a weak or very weak principle of sacrifice that would still revise upward how much money goes to the most effective organizations. I do (...) so by presenting four objections to their argument based on demandingness, fairness, net wealth, and historical and contemporary injustices. Then, I show that a principle of progressive can overcome these objections and better fits the reasons MacAskill, Mogensen, and Ord give in favour of their principle than their proposed operationalization of tithing. (shrink)

Effective altruism is the use of evidence and careful reasoning to work out how to maximize positive impact on others with a given unit of resources, and the taking of action on that basis. It’s a philosophy and a social movement that is gaining considerable steam in the philanthropic world. For example, GiveWell, an organization that recommends charities working in global health and development and generally follows effective altruist principles, moves over $90 million per year to its top recommendations. Giving (...) What We Can, which encourages individuals to pledge at least 10% of their income to the most cost-effective charities, now has over 3500 members, together pledging over $1.5 billion of lifetime donations. Good Ventures is a foundation, founded by Dustin Moskovitz and Cari Tuna, that is committed to effective altruist principles; it has potential assets of $11 billion, and is distributing over $200 million each year in grants, advised by the Open Philanthropy Project. [...] GPI Working Paper No. 8-2019. (shrink)

The empirically documented fact is that people’s preferences are time -biased. The main aim of this paper is to analyse in which sense do time -biases violate the requirements of rationality, as many authors assume. I will demonstrate that contrary to many influential views in psychology, economy and philosophy it is very difficult to find why the bias toward the near violates the requirements rationality. I will also show why the bias toward the future violates the requirements of rationality in (...) a very basic sense. (shrink)