01 · Selfish Altruism
ReadMost of what makes your life livable was handed to you by strangers. Every problem someone else solves is a problem you never face — so improving the world is not a tax on your effort; it multiplies everything your effort earns. Cooperation built on goods grows arithmetically. Cooperation that shares what it learns compounds.
Evidence The richest man alive in 1900 could not buy an antibiotic, a transatlantic phone call, or air conditioning at any price.
What supports it
Sulfonamide antibacterials reached clinical use in 1935 and penicillin in the early 1940s. The first transatlantic telephone service (radio-based) opened in 1927 and the first cable service in 1956. Willis Carrier's electrical air conditioning dates to 1902, with residential installations following in the 1910s.
What is inference
None. The dates are documented. The only softness is that air conditioning arrives two years after 1900 — the sentence is true as written and would be false if it said 1905.
What would weaken it
A documented pre-1900 clinical antibacterial, transoceanic voice link, or mechanical domestic cooling system available for purchase.
Sources
- Secondary Fleming, Chain, Florey — Nobel Prize in Physiology or Medicine 1945 Nobel Foundation, prize citation and lectures, 1945
- Secondary History of transatlantic telephony AT&T archives: 1927 radiotelephone service; TAT-1 cable, 1956
- Secondary Willis H. Carrier, "Apparatus for Treating Air" US Patent 808,897, filed 1904, granted 1906; first system installed 1902
Last reviewed September 6, 2026
Evidence The Marshall Plan was sold as self-interest — cheaper than the alternative — not as charity.
What supports it
The European Recovery Program disbursed roughly $13 billion between 1948 and 1952. Marshall's 1947 Harvard address framed it as directed "against hunger, poverty, desperation and chaos," and the Truman administration argued it to Congress on containment and trade grounds. The framing as self-interest is documented in the primary record.
What is inference
The book's stronger reading — that the plan caused the recovery and so proves cooperation pays — is the part that is argued. Historians disagree on the size of the economic effect: some credit institutions and confidence more than the money itself; others find the direct contribution modest against Europe's own output.
What would weaken it
Evidence that the funded economies would have recovered as fast without the program, or that the program was in fact argued to Congress primarily as charity.
Sources
- Primary George C. Marshall, address at Harvard University 5 June 1947, Department of State Bulletin
- Secondary DeLong & Eichengreen, "The Marshall Plan: History's Most Successful Structural Adjustment Program" NBER Working Paper 3899, 1991
- Secondary Alan Milward, The Reconstruction of Western Europe 1945–51 Methuen, 1984 — the skeptical reading
Last reviewed September 6, 2026
Evidence Afghanistan's decades of collapse cost the world many times what its stabilization would have cost.
What supports it
The Costs of War project at Brown University estimates US spending on the Afghanistan and Pakistan war zone at roughly $2.3 trillion through 2021, before interest and veterans' care. Aid and reconstruction spending across the same period was a small fraction of that.
What is inference
The counterfactual — what an earlier stabilization would have cost, and whether it would have worked — is inference. The cost of the collapse is documented; the cost of the road not taken is an estimate the book is making, and it should be read as one.
What would weaken it
A credible estimate that earlier stabilization would have cost as much as the war did, or evidence that stabilization was attempted at scale and failed for reasons money could not fix.
Sources
- Primary Costs of War project, "U.S. Costs to Date for the War in Afghanistan" Watson Institute, Brown University, 2021
- Primary Special Inspector General for Afghanistan Reconstruction, "What We Need to Learn" SIGAR lessons-learned report, August 2021
Last reviewed September 6, 2026

