kaal:claim:7598518-030

Claim. A coin-flip family is a negative control, because a coin-flip pool knows nothing about validity, and if it meets the registered leak criterion or fails its acceptance rule, both substrates lose confirmatory status.

Type. design · Support. stated

Holds when

• The control works because a coin-flip pool knows nothing about validity, so any apparent effect there indicates a leak.
• The consequence is registered in advance and applies to both substrates, not only the one where the failure appears.

Source quote

Family Z votes by coin flip. It is a negative control: a coin-flip pool knows nothing about validity, and if it meets the registered leak criterion or fails its acceptance rule, both substrates lose confirmatory status.

From. Wulf A. Kaal, Can Reputation Prevent Model Collapse? A Preregistered Test of Reputation-Weighted Data Filtering (2026). Full text.

Cite as. Wulf A. Kaal, Can Reputation Prevent Model Collapse? A Preregistered Test of Reputation-Weighted Data Filtering (2026). SSRN: https://ssrn.com/abstract=7598518

Verify. sha256 of source PDF cd22d148b2b55c2e27f087dcaa61cdf44ad7022b400b355c31a9cd7e43a31749 at https://wulfkaal.com/papers/7598518.pdf

Content hash. 82cbf8fcd1ec6b01305a6972e9753ab5ee2c016d17144d09b92bcc5ec6011701