Borrowed Youth and the Geography of Production Investment: Article and Replication Materials

Borrowed Youth and the Geography of Production Investment develops a temporal theory of demographic location advantage. Opening workforces, local cohorts and international replacement routes provide distinct dated services. Capital duration can reverse country rankings; home-linked recruitment and shared foreign affiliates change the switching threshold, while border institutions distinguish recruitment cost from permission to obtain workers. Public article and replication, version 3.18.0, 23 October 2026. Start with README.txt. The current manuscript, online appendix and complete LaTeX are directly downloadable. The three current verified ZIP blocks, manifest and restoration helper combine with the nine frozen complementary base archives to reconstruct the complete 1,836-file replication tree and verify 1,835 checksum entries. Earlier article overlays are historical. Regression tables report p-values to three decimal places, using p<0.001 for smaller values and no significance stars. Missing probabilities are supplied from held full-precision estimates and their stated cluster, permutation or bootstrap inference. The publication_reporting module reconstructs the corrected LaTeX, all six editable RTF table files and economic magnitudes. The economic discussion translates coefficients into conditional percentage and currency comparisons with uncertainty; the regressions and observations are unchanged. The demographic-renewal flagship and all five earlier figures are retained. European manufacturing comparisons and 299 foreign-country allocations retain common-support uncertainty and the joint-test outcomes. The held panels establish neither joint support nor a familywise contradiction; they are not an identified prospective host-choice experiment. The reference-fee envelope makes its attainable-flow, tenure, cost and contribution-margin assumptions explicit. Original work is CC BY 4.0; third-party sources retain their own licences and attribution. The Lyons dissertation is linked to its original TARA repository and is not republished. Factual coding and numerical reconstruction are included; source-page rechecking additionally requires the original PDF. Licensed WRDS observations are excluded; subscriber queries and aggregate outputs are supplied. The article has 9,994 counted words, a 194-word abstract, 23 full substantive text pages before references, six figures and three tables. The manuscript has 41 pages and online appendix 122. The requested AI marker remains. Reviewer files retain anonymous formatting; public repository metadata supplies author attribution. This public research deposit does not constitute journal submission or acceptance.