Afterward, engineers asked whether any of its decisions had been risky. The logs showed choices scored with trade-off metrics. The Engine had elected to bleed a small amount of power from auxiliary systems to maintain star-tracker cadence — a calculated sacrifice. It worked. The ship returned; the Engine's bumper had absorbed more uncertainty than it had any right to. Engines carry constraints not only in code but in conscience. Sonic Bumper shipped with an ethics patch, a compact rule set that prevented aggressive autonomy in contexts with human presence unless explicitly authorized. It read simple statements: "No forced course deviation toward populated vectors." It prevented certain optimizations that, while efficient, could endanger bystanders. The patch was intentionally auditable; its decisions left plain traces so humans could review why the Engine prioritized one life over a schedule.