01Spreadsheets that don't validate themselves
Risk registers, three‑point estimates, correlation matrices — entered by hand, silently wrong. Errors don't surface until the model misbehaves — and a number you can't trace to its source row is a number you can't defend under IPA- or ONR-grade scrutiny.
02Safran round‑trips that cost days
Build inputs, export, import, run, re‑export, re‑import. Every round‑trip is a chance to break the chain. By the time you're reporting, the schedule has moved on.
03Frameworks checked manually, inconsistently
DCMA 14‑point, Acumen Fuse SQI, CIOB PP21, SOMA's own readiness checks. Different analysts apply them differently. Different schemes end up assessed against different bars.