Iec 61508-7 -

She made 61508-7 required reading for every systems engineer. Not for certification. For humility.

I spent that night cross-referencing. Section B.6.9 (Software error effect analysis) with D.2.2 (Diverse programming). I realized: our single codebase was the real hazard. The counter overflow was trivial to fix. But what other latent overflows were sleeping in the memory? iec 61508-7

I retreated to my office, a tomb of stacked binders and coffee cups. On my screen was the post-mortem: a single, latent software fault. A counter variable in the obstacle-avoidance logic would overflow after 32,767 wheel rotations. Not on day one. Not on day ten. But on day forty-seven—today. The truck thought it had traveled negative distance. It “forgot” the rock pile. She made 61508-7 required reading for every systems engineer