{
  "scoring": "Priority = 10*impact + 6*dependency + 4*unresolvedness; inputs 1–5; editorial judgment, not probability",
  "reviewed_on": "2026-10-19",
  "challenges": [
    {
      "title": "Define a force law and an observable",
      "impact": 5,
      "dependency": 5,
      "uncertainty": 5,
      "score": 100,
      "problem": "A name or field map does not specify a measurable interaction. Alpha 1 lacks a supplied dynamical model.",
      "gate": "Write variables, units, coupling, boundary conditions and one numerical prediction distinguishable from a conventional model.",
      "owner": "Theory lead"
    },
    {
      "title": "Close the total momentum balance",
      "impact": 5,
      "dependency": 5,
      "uncertainty": 5,
      "score": 100,
      "problem": "A force on one component can be an internal exchange. The complete apparatus must include fields, radiation, supports and environment.",
      "gate": "Account for every momentum flux or storage term and identify the external partner, or specify the proposed departure to be tested.",
      "owner": "Theory + metrology"
    },
    {
      "title": "Exclude thermal, magnetic and mechanical artifacts",
      "impact": 5,
      "dependency": 5,
      "uncertainty": 4,
      "score": 96,
      "problem": "Heating, cable torque, magnetic pickup, outgassing and vibration can mimic a small force.",
      "gate": "Use matched dissipation controls, orientation changes, independent calibration and logged environmental channels.",
      "owner": "Experimental lead"
    },
    {
      "title": "Resolve the predicted force with traceable uncertainty",
      "impact": 5,
      "dependency": 4,
      "uncertainty": 5,
      "score": 94,
      "problem": "Sensor resolution is not measurement accuracy. Drift and calibration uncertainty can dominate the signal.",
      "gate": "Qualify the complete instrument across the predicted range before testing the candidate effect.",
      "owner": "Metrology lead"
    },
    {
      "title": "Reproduce the effect across independent runs",
      "impact": 5,
      "dependency": 4,
      "uncertainty": 4,
      "score": 90,
      "problem": "Repeated samples within one drift sequence do not equal independent experiments.",
      "gate": "Freeze the protocol and analysis; repeat on separately prepared runs, then transfer the protocol for independent replication.",
      "owner": "Independent reviewer"
    },
    {
      "title": "Distinguish ordinary coupling from new physics",
      "impact": 5,
      "dependency": 4,
      "uncertainty": 3,
      "score": 86,
      "problem": "A real force can arise from ordinary photons, plasma or external fields.",
      "gate": "Compare competing models and perturb the variables that distinguish them; report residual bounds.",
      "owner": "Analysis lead"
    },
    {
      "title": "Establish whole-system energy and heat flow",
      "impact": 5,
      "dependency": 3,
      "uncertainty": 4,
      "score": 84,
      "problem": "An electrical response or local force does not determine the useful output of a complete system.",
      "gate": "Measure input energy, losses, radiation, stored energy and heat rejection over a declared operating cycle.",
      "owner": "Power + thermal engineer"
    },
    {
      "title": "Demonstrate useful scaling",
      "impact": 5,
      "dependency": 3,
      "uncertainty": 3,
      "score": 80,
      "problem": "Nanoscale interaction strength does not predict vehicle acceleration. Array interactions and supporting mass matter.",
      "gate": "Validate a scaling law on multiple sizes with all support, power and cooling mass included.",
      "owner": "Systems lead"
    },
    {
      "title": "Characterize real material response",
      "impact": 4,
      "dependency": 4,
      "uncertainty": 4,
      "score": 80,
      "problem": "Ideal conductors and chosen metamaterial patterns can depart sharply from fabricated devices.",
      "gate": "Measure relevant optical/electrical response, loss, roughness, temperature dependence and fabrication variation.",
      "owner": "Materials lead"
    },
    {
      "title": "Keep a driven system stable",
      "impact": 4,
      "dependency": 4,
      "uncertainty": 3,
      "score": 76,
      "problem": "A moving, heated or driven structure needs a quantitatively stable operating region.",
      "gate": "Model coupled dynamics and measure transfer functions, control margins and transients.",
      "owner": "Controls lead"
    },
    {
      "title": "Separate power-source development from force testing",
      "impact": 4,
      "dependency": 3,
      "uncertainty": 4,
      "score": 74,
      "problem": "Combining an unqualified living power system with an unqualified force mechanism makes causality difficult to resolve.",
      "gate": "Use a characterized conventional supply for the first force tests; evaluate Helios integration only after measured load and net-power requirements exist.",
      "owner": "Systems lead"
    },
    {
      "title": "Understand environment dependence",
      "impact": 4,
      "dependency": 3,
      "uncertainty": 3,
      "score": 70,
      "problem": "A mechanism that uses a surface, plasma or planetary field may not work in deep space.",
      "gate": "Declare an operating envelope and test environmental dependencies explicitly.",
      "owner": "Mission analyst"
    },
    {
      "title": "Demonstrate structural life and manufacturability",
      "impact": 4,
      "dependency": 3,
      "uncertainty": 2,
      "score": 66,
      "problem": "Small gaps, thin membranes and patterned surfaces bring fatigue, contamination and yield constraints.",
      "gate": "Qualify durability, tolerances and repeatable fabrication under the proposed loading.",
      "owner": "Mechanical + materials"
    },
    {
      "title": "Preserve data and analysis integrity",
      "impact": 4,
      "dependency": 2,
      "uncertainty": 3,
      "score": 64,
      "problem": "Missing provenance, selective exclusions or changing processing can make a signal uninterpretable.",
      "gate": "Use versioned analysis, raw immutable exports, synchronized clocks, documented exclusions and an audit record.",
      "owner": "Data steward"
    },
    {
      "title": "Recruit the required technical capability",
      "impact": 4,
      "dependency": 2,
      "uncertainty": 2,
      "score": 60,
      "problem": "The program requires specialist theory, precision measurement and engineering expertise.",
      "gate": "Assign accountable leads and external review before experimental sign-off. Roles listed here are needs, not existing appointments.",
      "owner": "Founder"
    },
    {
      "title": "Select an achievable first product",
      "impact": 3,
      "dependency": 3,
      "uncertainty": 3,
      "score": 60,
      "problem": "A propulsion vision is not yet a customer deliverable.",
      "gate": "Validate a bounded instrumentation or modeling need with potential buyers and demonstrate that exact deliverable.",
      "owner": "Commercial lead"
    },
    {
      "title": "Secure capital against evidence gates",
      "impact": 3,
      "dependency": 3,
      "uncertainty": 2,
      "score": 56,
      "problem": "Large speculative hardware commitments can outrun both knowledge and runway.",
      "gate": "Obtain scoped quotes and fund one decision gate at a time; do not use unverified breakthrough forecasts.",
      "owner": "Founder + finance"
    },
    {
      "title": "Clarify ownership, prior art and rights",
      "impact": 3,
      "dependency": 2,
      "uncertainty": 3,
      "score": 54,
      "problem": "Published science and independent contributions are not automatically company-owned inventions.",
      "gate": "Document contributors, licenses, disclosures and implementation-specific ownership with qualified counsel.",
      "owner": "Founder + counsel"
    },
    {
      "title": "Qualify experimental and operational safety",
      "impact": 3,
      "dependency": 2,
      "uncertainty": 2,
      "score": 50,
      "problem": "Vacuum, optical, electrical and mechanical hazards depend on the selected apparatus.",
      "gate": "Complete an apparatus-specific hazard review and interlocks before energizing equipment.",
      "owner": "Experimental lead"
    },
    {
      "title": "Plan the eventual operating and regulatory pathway",
      "impact": 3,
      "dependency": 2,
      "uncertainty": 1,
      "score": 46,
      "problem": "Requirements depend on whether the actual product is a lab instrument, orbital hardware or an atmospheric vehicle.",
      "gate": "Choose the application first; obtain current jurisdiction-specific review before sale, launch or field operation.",
      "owner": "Program lead + counsel"
    }
  ]
}