Scott Alexander tackles a question that haunts every donor and policy maker: why do we insist on using the tax machine for charity when we wouldn't do it ourselves? The piece's most striking claim is that the common accusation—that voters are just trying to spend other people's money—is mathematically flawed because the voters themselves pay the taxes. Instead, Alexander suggests the real driver is a psychological need to turn fragmented, individual desires into a single, solvable headline.
The Flaw in the "Other People's Money" Theory
The article begins by dismantling a popular libertarian critique. A commenter named Fabian argues that if a charity isn't worth your personal money, it shouldn't be worth the government's. Alexander writes, "I'm more sympathetic to this argument than I am to the usual strategy of blatantly lying about the efficacy of USAID; I'm a sucker for virtuous libertarianism when applied consistently." This admission sets a rare tone of intellectual honesty, acknowledging that the moral objection to forced charity is strong.
However, Alexander quickly pivots to show why this objection misses the mark in a democracy. He points out that in a vote to tax everyone $100 for aid, the pro-aid voter loses that same $100. "A simple problem with this argument is that actually, each voter's money will also be taxed," he notes. The idea that supporters are simply offloading costs onto others falls apart when you realize they are paying the bill too. This is a crucial correction to the narrative, forcing us to ask: if they are paying, why not just give it directly?
If you neither give nor receive, you are just neutral. The receivers are not meant to give anyways.
Alexander explores two potential loopholes: that the majority is using the government as a "force multiplier" to match the donations of the unwilling minority, or that the supporters are disproportionately poor. He dismisses both. The data suggests that supporters of foreign aid are often wealthier and more educated than opponents. "It can't be worth their time to pass foreign aid laws (rather than donate directly) just in order to seize an extra 20% from the opponents," he argues. The loss of flexibility in choosing which charity to support outweighs the tiny financial gain of forcing others to chip in.
The Psychology of the "Solved" Problem
If it's not about money, what is it about? Alexander introduces the "Bundling Argument," which offers a fascinating psychological explanation. He suggests that human brains struggle with the idea of marginal impact. "Most people engage with the sorts of distant suffering that require charity primarily through the news," he writes. In the news, a famine killing 49,999 people feels identical to one killing 50,000. A single $100 donation feels like a drop in the bucket.
But a government mandate changes the narrative. It bundles thousands of small contributions into a single, massive intervention. "What you really want is to read the headline 'FAMINE SOLVED, GRATEFUL WORLD GIVES THANKS TO CHARITABLE HEROES'," Alexander observes. This reframing is powerful because it addresses a deep human desire for closure and efficacy. We don't just want to help; we want to solve.
Critics might note that this psychological framing risks justifying inefficient spending. Just because a headline sounds better doesn't mean the government is the best vehicle for the solution. However, Alexander anticipates this by comparing it to the military. He asks why we don't use voluntary "assurance contracts" for national defense, where a contract only activates if enough people sign up. He concludes that the transaction costs would be too high. "Some people would never hear about it, no matter how well-advertised it was," he lists, noting that human laziness, anxiety, and misunderstanding would cause the system to collapse.
The Gap Between Belief and Action
The piece concludes by exploring the gap between what we say we value and what we actually do. Alexander points to the conflict between our "near mode" (immediate desires) and "far mode" (abstract ideals). "Many people say phones are terrible and destroying society... Then they spend all their time on their phone," he writes. This inconsistency isn't necessarily hypocrisy; it's a feature of how human preferences are elicited.
He challenges the economist's habit of calling only the action "revealed preference" and dismissing the stated belief as fake signaling. "I consider this unwise," he states, arguing that our stated preferences for a better world are real, even if our immediate actions fail to match them. The tax system, in this view, acts as a commitment device that forces our "best selves" to align with our "regular selves."
Contra the economists, I'm not sure that we fund the military through coercive taxation only to avoid free rider problems. I think we fund it through taxation to avoid the same kinds of transaction cost issues that would sink the assurance contract.
Bottom Line
Alexander's strongest move is shifting the debate from moral coercion to psychological necessity, showing that voters aren't trying to cheat the system but are instead trying to solve a coordination problem that voluntary giving cannot fix. The argument's biggest vulnerability is its reliance on the assumption that government is the only mechanism capable of overcoming these transaction costs, ignoring the potential for better-designed private platforms. Readers should watch for how this logic applies to other areas where we prefer collective mandates over individual choice, from climate change to healthcare.
The tax system, in this view, acts as a commitment device that forces our "best selves" to align with our "regular selves."