1. The stalker who learned the Zone
Arkady and Boris Strugatsky’s Roadside Picnic returns one last time for this arc because the best stalkers are not those with the best maps but those who know how to read the Zone as it changes. The desktop’s radiation strategy must be the same: not a fixed procedure but a responsive loop of sensing, deciding, and acting.
Entries 617 through 619 wondered about autonomous radiation mitigation, throttling and relocation, and what the capability needs from the desktop. This entry closes the arc.
2. What was learned
The autonomous radiation mitigation wondering gives the desktop four constraints:
- Autonomy fills the gaps between ground contact. Pre-planned responses are necessary but not sufficient.
- Throttling and relocation are practical responses if the architecture supports cell migration and policy-driven performance limits.
- Mitigation is a closed loop of sensors, models, actuators, and policy.
- Policy must bound the autonomy. Thresholds, priorities, time limits, override, and recovery rules prevent the platform from overreacting or underreacting.
3. What was decided
The desktop will adopt autonomous radiation mitigation as a closed-loop capability with ground override. This means:
- The platform will monitor dose rate, error rates, and predicted flux.
- It will throttle non-critical workloads, increase scrubbing, and relocate critical tasks when thresholds are crossed.
- It will enter a radiation-safe mode if flux exceeds mission-threatening levels.
- Ground can override any autonomous mitigation decision and can update thresholds and policy.
- All mitigation events are logged and reported to ground.
4. Interaction with earlier arcs
The autonomous radiation mitigation arc connects directly to:
- the radiation-hardened computing reading arc: mitigation does not remove the need for hardened design, but it extends its reach;
- the autonomy arc: hierarchical decision-making must include radiation response as one of its modes;
- the predictive maintenance arc: error-rate trends feed into degradation models;
- the communications resilience arc: telemetry and command policies must adapt during high-radiation events.
5. What remains open
The exact sensor suite, flux models, and mitigation thresholds depend on the orbit, shielding design, and component selection. The wondering arc has set the strategy; detailed design comes later.
6. What this changes
- The autonomous radiation mitigation wondering arc is closed.
- The desktop inherits a closed-loop radiation mitigation capability with ground override.
- The next arc will design a test for single-event upset recovery.