This deposit is the online appendix to the Foresight article "Writing a Test That Can Fail You" and to the working paper "Epistemic Typing at the Rendering Boundary." It holds the pre-registered evaluation protocol (BACKTEST_SPEC.md, frozen before any candidate was scored, with dated addenda), the report the harness produced from it (BACKTEST_REPORT.md), and the harness code. The data is public US Census state-level trade for Washington and New York with India, at the vintage the protocol pins. SHA-256 of BACKTEST_SPEC.md as deposited: 4f59c4c23714251a27def93900ba14e32c2a08f4f270695c1423bcc671738f3e.
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Sarma et al. (2026) studied this question.
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