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This summary covers The Economist’s July 4th, 2026 By Invitation essay by Carson Block, listed in the contents as Carson Block on what AI could do to markets and published under the headline When markets crash, stabilising them will be easy compared with reordering society for AI.

Block argues that rapid AI adoption could trigger two crises at once. The first would be financial: displaced knowledge workers would stop contributing to retirement accounts and begin withdrawing from them, reversing the passive-investment flows that have helped lift America’s largest technology stocks. The second would be political and social: governments might know how to restore market liquidity, but not how to preserve a social contract built around paid employment.

The essay is deliberately stark. It predicts that AI could replace 15% of jobs in America’s broader knowledge economy within three or four years. If that happens, Block contends, the resulting market crash would be serious but manageable compared with the upheaval caused by separating economic growth from work and wages.

From job losses to forced selling

The argument begins with highly paid professionals. Their earnings support consumer spending, mortgage payments and regular contributions to retirement plans. Block expects AI to eliminate many of these jobs rather than simply make workers more productive. He points to technology companies that have already reduced teams of several people to one with current models and argues that model capabilities are advancing too quickly for displaced workers to retrain fast enough.

This is where labour-market disruption becomes a market mechanism. Workers who lose their jobs would first stop adding money to retirement accounts, then sell assets to cover living costs. Because much of that money sits in passive funds tracking the S&P 500, redemptions would force funds to sell the index’s constituents in proportion to their weights.

The sales would be broad, but Block says their price effects would not be even. Nvidia, Microsoft, Amazon and other AI-related megacaps have benefited most from automatic inflows and now dominate the index. Research cited in the essay suggests that each unit of money entering or leaving the market can move the value of the largest companies by a much greater amount. An index intended to diversify risk has therefore become, in Block’s description, a concentrated source of volatility.

That creates the essay’s central irony. The companies driving the AI revolution could suffer the steepest share-price falls when the technology displaces the professional workers whose savings helped sustain their valuations.

A familiar financial rescue, an unfamiliar social crisis

Block expects the combination of falling consumer demand, retirement-fund withdrawals and declining asset prices to produce a crisis at least as severe as the one of 2007-09. Stress in private credit and insurers’ balance-sheets could amplify the damage, while tighter global liquidity would depress other assets and add to deflationary pressure.

Yet governments have a tested response to that part of the problem. Central banks and treasuries can inject liquidity, support financial institutions and try to reflate asset prices. The harder challenge would begin after markets stabilise. If AI allows firms to produce more with far fewer workers, restoring share prices would not restore the lost jobs, incomes or sense of economic participation.

The essay briefly rejects two more optimistic possibilities. One is the Jevons paradox: efficiency can lower costs, expand demand and ultimately create more work. The other is that adoption will be slow enough for people and institutions to adjust. Block argues that successive generations of increasingly capable models will make additional workers obsolete faster than new demand or retraining can absorb them. Firms that hesitate to adopt AI, meanwhile, may face such large cost disadvantages that delay becomes existential.

The result would be a society in which output can grow while many consumers lack the wages needed to share in that growth. Block’s warning is therefore less about whether policymakers can stop a stockmarket panic than whether political institutions can redesign income, security and social status for a world in which employment no longer distributes the gains from production. The financial plumbing has a playbook; the social settlement does not.