The Spacetime Metric

Level 6 · Research preparation teaching kit · Doctoral and independent-research pathway

Precision propulsion metrology

Use the learner record during the live investigation, then use the instructor guide to facilitate comparison, address misconceptions, and assess evidence-bounded reasoning.

Learner lab record

Blinded propulsion round-robin adjudication

Can multiple laboratories recover calibrated injections, reject shams, and agree within declared heterogeneity before interpreting an unknown force residual?

Setup

Use the propulsion round-robin workspace. Freeze each laboratory's calibration and uncertainty model, test hidden injections and shams, then combine only qualified laboratory results with a declared heterogeneity rule.

Predict first

  1. 1. Declare injection-recovery and sham-rejection thresholds before unblinding.
  2. 2. Predict the adjudication if one laboratory is a high-significance outlier.
Variables
VariableRoleUnit
Injection and sham statesblinded validation inputshidden category/force
Laboratory calibration and uncertaintymeasurement inputsN and N
Recovered residualsdependentN
Heterogeneity and qualificationadjudication diagnosticsχ²/dof and pass/hold

Observation columns

labblind statecalibrationresidualuncertaintyinjection recovered?sham rejected?qualified?

Analyze

  1. 1. Does every lab recover the same traceable injection?
  2. 2. Which artifact model explains any orientation or timing dependence?
  3. 3. Is cross-lab heterogeneity acceptable?
  4. 4. Why is calibration validation distinct from a propulsion-effect meta-analysis?

Conclusion frame

Of ___ laboratories, ___ qualified; χ²/dof was ___, injection recovery ___, and sham rejection ___, so unknown-effect adjudication is ___.

Instructor guide · 80–110 minutes

Teach the investigation, not the interface

Learning target: Researchers validate calibration, artifact rejection, blinding, and cross-laboratory agreement before attributing precision force residuals.

Prepare

  • Freeze calibration and qualification thresholds.
  • Prepare hidden injections, shams, and one outlier.
  • Define the heterogeneity action rule.

Facilitation moves

  • Unblind validation states before unknown effects.
  • Require mechanism-specific reversals.
  • Do not average an unqualified outlier into apparent consensus.

Accessibility and participation

  • Provide a lab-by-lab adjudication table.
  • Use labels and symbols in addition to residual colors.
  • Translate χ²/dof into a plain-language agreement statement.

Evidence of learning

  • Prespecified qualification thresholds
  • A blinded lab-level adjudication
  • A justified pool/hold decision

Misconception checks

Several positive point estimates constitute replication.

Laboratories must recover traceable injections, reject shams, control artifacts, and agree under a prespecified model.

An outlier with the smallest p-value deserves the most weight.

Unexplained heterogeneity can reveal calibration or artifact failure and may invalidate pooling.

Extension

Design a second-round protocol that swaps hardware and analysis teams to localize laboratory versus apparatus effects.