Jul 28, 2026 LLMs Can't Prove Your Code Correct, But They Can Write the Boilerplate That Does Cleanroom verification requires generating and discharging proof obligations. cleanroom-correctnessllmformal-proofsautomation
Jul 27, 2026 Cleanroom Delivers 0.1 Defects per KLOC. You Don't Need the Full Religion to Get There. Cleanroom software engineering cuts defect rates by 100×, but full adoption requires separate test teams and formal proofs. cleanroom-correctnessprocessefficiencypragmatism
Jul 26, 2026 IBM's Zero-Defect Process Delivered 0.1 Bugs Per KLOC. The Industry Abandoned It Anyway. IBM's Cleanroom engineering achieved defect rates 100× better than industry average, then faded into obscurity. cleanroom-correctnesszero-defectssoftware-historyprocess
Jul 25, 2026 Did anyone actually verify 10,000 lines with zero defects? IBM did, and the methodology is stranger than the result. Cleanroom software engineering promised zero-defect increments through mathematical verification instead of debugging. cleanroom-correctnesszero-defectsverificationcase-study
Jul 24, 2026 Your Module Has Three Layers. You Probably Only Wrote One. Box structures force you to define what a module does, what it remembers, and how it works as three separate, verifiable layers. cleanroom-correctnessbox-structurearchitecturespecification
Jul 23, 2026 IBM shipped software with 0.1 defects per KLOC by banning developers from running their own code IBM's Cleanroom engineering process achieved defect rates 100× better than industry average by preventing bugs instead of finding them. cleanroom-correctnessibmzero-defectssoftware-quality
