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A Second Opinion From the Original Engine

· 7 min read
reverse-engineering → modernization

For months, every number in this project has been checked the same way: a person reads the original engine's instructions, works out by hand what they must produce, and writes that value into a test. It's rigorous — but it's one person's arithmetic standing in for the CPU. The weak point was always the derivation: a subtle misreading can hide in a test for a long time, because the test and the reading share the same author and the same blind spot. Today the project got three ways to have that reading checked by something that doesn't share the author.