Daron Acemoglu

2 items

Financial Times 2026-04-23-2

High earners race ahead on AI as workplace divide widens

The FT/Focaldata tracker landed with the expected inequality headline, but the operational finding is buried: corporate training is the single biggest driver of AI adoption, and a single Google session tripled daily usage among UK women over 55. Within lawyers, accountants, and developers, senior and junior adoption rates are nearly identical, which means seniors are directing AI to do what juniors used to do. The career pyramid erosion mechanism is now empirical, not speculative, and every firm that depends on apprenticeship-to-expertise faces a succession crisis that compounds with each training cycle missed.

NBER 2026-04-10-1

How AI Aggregation Affects Knowledge

Acemoglu and co-authors prove a speed limit on AI retraining: when a global aggregator updates too fast on beliefs it already shaped, no training weights can robustly improve collective knowledge. The impossibility result is mathematical, not speculative. Local, topic-specific aggregators avoid this trap entirely by compartmentalizing feedback loops. The industry is consolidating toward fewer, larger, faster-retraining models: precisely the architecture the paper identifies as structurally fragile.