#448 — The Philosophy of Good and Evil

Episode Summary

Executive Summary: Sam Harris and David Edmonds discuss Edmonds' new book about philosopher Peter Singer and the effective altruism movement, centered on the famous 'shallow pond' thought experiment. They explore moral philosophy, consequentialism, and thought experiments like the trolley problem, debating whether all moral intuitions can be reduced to consequences. The conversation critiques how we inconsistently apply moral reasoning to real-world issues like traffic deaths.

Main Topics: Thought Experiments in Moral Philosophy (Priority: 5/5): Debate over the value and limitations of thought experiments like the trolley problem and shallow pond, including objections about artificiality and moral intuitions not designed for weird scenarios. Consequentialism vs Non-Consequentialist Intuitions (Priority: 5/5): Core philosophical debate about whether all moral considerations can be reduced to consequences, using trolley variants and organ donation scenarios to test boundaries. The Trolley Problem and Doctrine of Double Effect (Priority: 4/5): Detailed exploration of the classic trolley problem variants, the fat man case, and the distinction between intending vs foreseeing harm. Moral Inconsistency and Real-World Consequences (Priority: 4/5): Application of consequentialist reasoning to everyday moral failures, using traffic deaths (40,000/year in the US) as an example of collective moral blindness. David Edmonds' Book and Peter Singer (Priority: 3/5): Background on Edmonds' new biography 'Death in a Shallow Pond' and the influence of Peter Singer's work on effective altruism and moral philosophy.

Key Arguments: Thought experiments are valuable because they isolate specific variables to clarify moral intuitions, even if scenarios are artificial. Consequentialism can account for differences like pushing vs switching by including psychological and societal consequences in the calculation. The intending vs foreseeing distinction explains why people judge trolley cases differently, but this may be reducible to consequences. People are inconsistent in their moral reasoning, tolerating thousands of preventable deaths for convenience while agonizing over hypothetical single deaths. The organ donor thought experiment fails because in practice it would erode trust in healthcare, a significant consequence. The doctrine of double effect (from Thomas Aquinas) remains a powerful non-consequentialist intuition many find compelling.

Data Points: Traffic deaths per year in the US: 40,000 - Used to illustrate inconsistent moral concern about statistical vs identifiable victims US deaths in Vietnam War: 58,000 - Comparison to annual traffic fatalities to highlight scale of preventable deaths Trolley problem survey result 1: 95% approve - Percentage of people who would flip the switch to save 5 at cost of 1 Trolley problem survey result 2: 95% disapprove - Percentage of people who would not push the fat man off the footbridge

Pivotal Quotes: "The thought experiment is designed to simplify and clarify and try and get at the nub of a problem." — David Edmonds: Defending the use of artificial thought experiments in moral philosophy "I've yet to hear a real argument against consequentialism that takes all consequences, all things considered, into account." — Sam Harris: Challenging the notion that thought experiments refute consequentialism "How is this acceptable and how are we not monstrously unethical for accepting it?" — Sam Harris: On the 40,000 annual US traffic deaths that could be prevented by reducing speed limits

Implications: The conversation challenges listeners to examine their moral intuitions more rationally, especially regarding statistical victims vs identifiable ones. It suggests that effective altruism and consequentialist frameworks, while controversial, offer powerful tools for addressing global suffering and our inconsistent moral priorities.