The Exhaustion of the Classical Development Toolkit: Aid Transfers, Export-Led Catch-Up and the Labour Ladder under Sovereign AI

Classical development economics bequeathed a recognisable toolkit: a big push financed by external savings, the absorption of surplus labour into low-wage manufacturing, export-led catch-up under open markets, and aid that closes financing gaps. This article synthesises the author's published work from 2014 to 2026 to argue that the toolkit is losing its mechanisms, though not its place in the history of the discipline. Five strands are examined: the aid-transfer paradigm, now squeezed by the largest recorded fall in official development assistance and by rising debt service; export-led openness, which without productive, financial and physical connectivity no longer delivers structural transformation for smaller economies; the labour-intensive ladder, which a process-level simulation of ready-made garment factories shows being automated; a binding constraint that has moved from capital towards compute and sovereignty; and institutional templates that read voids as deficits rather than as design spaces. The argument concerns the structural exhaustion of mechanisms, not a dated forecast. It closes with counter-arguments, explicit falsification conditions and a testable indicator set covering domestic research intensity, fiscal space, sovereign compute capacity and the share of aid delivered through country systems. KSCCN full-colour edition, 13 pages, with three stylised equations and three tables. A synthesis of the author's published Zenodo papers on official development assistance (doi:10.5281/zenodo.23944186; doi:10.5281/zenodo.24048235), trade architecture for smaller economies, automation in ready-made garments (doi:10.5281/zenodo.23282492), sovereign AI and institutional voids. Garment-sector figures are model outputs; one figure marked † was not independently verified. The views expressed are those of the author.