Jun 15, 2026 Differential Testing Works Without a Formal Proof, but Common-Mode Failures Are the Catch Differential testing lets you find bugs without knowing the correct answer. The problem is that correlated mistakes look like agreement. n-version-programmingdifferential-testingformal-methodstrust
Jun 14, 2026 Testing Won't Prove Two Functions Are Equivalent. Here's What Will. N-version programming assumes your implementations agree. n-version-programmingequivalence-testingformal-methodsverification
Jun 13, 2026 What If My LLM Variants Disagree? Which One Is Right? Running multiple LLMs in parallel catches errors that any single model will confidently ship. n-version-programmingllmdifferential-testingdisagreement-resolution
Jun 12, 2026 Five Implementations and No Majority: How to Actually Pick the Best One N-version programming sounds simple: run multiple implementations and pick the best answer. In practice, 'best' is a lot harder to define than 'most common.' n-version-programmingimplementation-selectiondifferential-testingai-engineering
Jun 11, 2026 The Same LLM Can Write Five Versions of Your Function. Here's How to Make Them Actually Different. N-version programming with LLMs doesn't require multiple models. n-version-programmingllmdiverse-implementationsai-engineering
Jun 10, 2026 NASA Ran 27 Copies of the Same Program. The Bugs Voted as a Bloc. N-version programming promised that independent teams would make independent mistakes. n-version-programmingnasafault-tolerancesoftware-history
