Statement
Do not approve an irreversible mission architecture until alternatives, arrival, braking, rights, rescue limits, and whole-lifecycle maintenance have independent evidence.
Evidence dimensions
- Basis
- normative
- Readiness
- early research
- Confidence
- supported
Assessment rationale
The claim is a GShips decision rule grounded in lifecycle systems practice and the irreversible consequences of an unbraked or unmaintainable mission; it is not a physical law.
Citations and locators
- NASA Systems Engineering Handbook (opens external site in a new tab)
Stakeholder expectations, requirements, lifecycle, decision analysis, verification, validation, and technical risk. · direct method - Project Longshot: An Unmanned Probe to Alpha Centauri (opens external site in a new tab)
Arrival, long-life power, autonomy, communication, and enabling-technology assumptions. · context only
Assumptions and limits
The assessment applies to this bounded statement and the cited source scopes. A source can support one relationship without validating a generation ship, and an editorial grade does not substitute for independent review or representative demonstration.
What would change this conclusion?
A legitimate, independently reviewed decision framework that better protects future people, alternatives, arrival safety, and reversibility could replace this gate; evidence closing only propulsion would not.
Editorial record
- Prepared by: GShips Project
- Last reviewed: 2026-07-25
- Review status: substantive editorial review
- Reviewer: GShips Project editorial synthesis
- Independent review: pending two person required
- Conflicts: Publisher intends to explore a commercial venture based on some GShips work.
- High-consequence domains: governance, intergenerational-rights