Computer narration. This is a reading of the open textbook, not a recorded guest interview. The text remains an editorial draft awaiting independent review. No voice was cloned. Published October 25, 2026.
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Transcript
The audio opens with the show name, episode title and narration disclosure, then reads the chapter below. Spoken source names link to the references in this transcript. It closes by inviting corrections and noting that every depth level is needed.
Every allocation is an exchange rate
A donor with $1,000 who gives half to a malaria program and half to a museum has made a judgment, whether or not they meant to, about how those two goods compare. A foundation that funds animal welfare instead of education has set an exchange rate between the suffering of animals and the learning of children. Every choice between causes makes such a judgment. Writing the judgment down is what lets people argue about it.
Can outcomes in different causes be put on one scale, and where must comparison stop? That is Open Problem 2, the Exchange Rate Problem, and it is one of the hardest questions in the field.
Common scales and what they carry
Within health, there is a standard common scale. A disability-adjusted life year (DALY) counts years of life lost to a condition plus years lived with a disability, weighted by how severe it is. Toby Ord used DALYs to show how far apart health interventions can be: in one standard set of estimates, the best produced about 15,000 times the benefit per dollar of the worst. A common scale made that difference visible. See cost-effectiveness analysis.
Every scale has values built in. The severity weights in a DALY are judgments about how bad a disability is. GiveWell, which compares saving lives with raising incomes, has to decide how much one is worth against the other. It calls these choices moral weights, bases them partly on a survey of people similar to those its programs reach and says plainly that donors may disagree. Outside health, the trouble grows. A life saved, a forest protected, a law changed and a tradition kept alive do not share a natural unit.
Eight ways of seeing
Charitology does not pick one framework and convert everything into its currency. It looks at every gift through eight moral frameworks, each with its own central question:
- Welfare: What reduces the most suffering and adds the most wellbeing?
- Rights and duties: What do we owe each other, whatever the cost?
- Justice: What is unfair, and how do we fix it rather than soften it?
- Care: Who depends on me, and how do I show up for them?
- Faith and tradition: What does my tradition ask me to give, and to whom?
- Future generations: What protects the people who aren’t born yet?
- All life: What protects animals and the living world for their own sake?
- Flourishing: What helps people become who they could be?
Each framework makes some goods easy to see and others hard to see. A welfare lens asks about wellbeing from both bed nets and museums. A care lens asks about relationships and responsibilities, which can include neighbors and distant strangers. The frameworks differ internally, and these short sketches cannot speak for every holder of a view. Charitology hypothesizes that considering more than one lens can reveal choices a giver might otherwise miss; it has not measured how many givers use a single lens. That is the Single Lens, the condition Charitology was founded to treat.
Deciding when you are not sure which view is right
Uncertainty about which moral view is correct has a name: moral uncertainty. William MacAskill, Krister Bykvist and Toby Ord argue that it is the normal condition, given how hard ethics is and how widely people disagree. They examine several ways to act under it.
The simplest is to follow your favorite theory and ignore the rest. They argue that this approach has serious problems. Another is to give each theory weight in proportion to your credence in it and choose the option with the highest expected choiceworthiness, which works when theories can be compared on a common scale. When they can’t, the authors borrow tools from voting theory.
A fourth approach is the moral parliament. Nick Bostrom proposed in 2009 that you imagine each theory sending delegates to a parliament in proportion to your credence in it, where they bargain and vote. A view with few seats can still win on the issues it cares about most by giving way elsewhere. In 2021 Toby Newberry and Toby Ord developed the idea and showed that other approaches can be read as parliaments with different rules.
Every approach faces hard cases. One is fanaticism: a view you barely believe could take over your choices if it claims the stakes are enormous. Chapter 7’s discussion of the far future is where that worry bites hardest.
How Charitology does it in practice
Charitology’s method has four steps, each with a tool or page to go with it.
- Say what you value. The Values Compass asks how strongly you agree with a statement from each framework and where you stand on questions such as whose suffering counts and how much uncertainty you can live with.
- Look for agreement. Some gifts look good under almost every framework. Those are robust choices, and they can anchor a portfolio.
- Map the disagreement. Where frameworks part, say so and say why. The Disagreement Register records live debates in full, such as whether to give near or give far.
- Allocate on purpose. The Portfolio Builder uses a simple credence-weighted method to turn your weights into an allocation, so that every framework you take seriously gets its share.
The authors of Moral Uncertainty also argue that moral information has value: thinking harder about ethics can be worth doing, because it can change what you ought to do. That is part of the case for Charitology’s Moral Frameworks Program.
Where comparison stops
Some comparisons may never be possible, and an honest field says where. Whether different methods of acting under moral uncertainty give stable answers for real donors, and which is most defensible, is Open Problem 16, Moral Parliament in Practice. Until it is solved, the best a giver can do is make the exchange rate visible, hold it loosely and revisit it. The frameworks themselves are editorial sketches, and real philosophers disagree inside every one of them. Anyone can propose a better version with a pull request. See the Method.