The Open-Items Risk Register
A single list of the burner's open technical risks, each tied to the gate it belongs to and the milestone that would retire it.
One place for the honest risks
Scattered caveats are easy to lose. The register collects the burner's open items in one place, each mapped to a gate and a milestone. Nothing here is economic; every item is a physics or engineering unknown.
How items retire
- Plug coil — retires with a tested prototype at field
- Regime — retires as stepped experiments shrink the extrapolation
- Fuel — retires as breeder fleet then lunar ³He scale
- Availability — retires with fleet operating hours
Living document
The register is updated as evidence arrives. An item moves from open to demonstrated only when hardware supports it, mirroring the simulated-versus-demonstrated ledger.
A register is more honest than scattered caveats because it forces every open item into one comparable list, each tied to the gate it belongs to and the milestone that would retire it. Nothing here is economic; every entry is a physics or engineering unknown. An item leaves the register only when hardware supports it, mirroring the simulated-versus-demonstrated ledger elsewhere in this section.