Replication data and code for: After the Flood: Cheap Production, Costly Selection, and the Future of the Commons

Code and derived data sufficient to reproduce every figure and headline estimate in the paper and its supplementary materials. The panel covers 789,933 human pull requests submitted to 1,069 actively developed open-source repositories (2021-06 through 2026-05, data end 2026-05-29), with contributor track records reconstructed as of each submission date. Also includes the conference-program analyses (NBER Summer Institute, Dagstuhl Seminars, Cosyne) in the supplementary materials. See README.md for the figure-to-script map, environment, and how to run. Code is MIT licensed; data files are CC BY 4.0 and derive from public GitHub repositories, repository metadata, the public GitHub event archive, and publicly posted conference programs. A working-paper version of the article is posted at SSRN (abstract no. 7194358). Package v1, assembled 2026-07-30.