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HCI / 05 / Initial protocol

Agent + Machine Interfaces.

What must an answer to “Where am I, and can I trust this?” carry across human, agent, and machine surfaces?

Registered 11 September 2026Spacetime Research / version 1

Interactive prototype / synthetic state

Inspect the uncertainty.

Illustrative · not navigation
Synthetic route uncertainty envelopeThe shaded ellipse shows an assumed 95 percent positional radius, against a plus or minus 20 meter illustrative corridor. Adjust the controls below.SYNTHETIC / LOCAL FRAME / METERSTOP-DOWN · ±20 m LATERAL CORRIDOR
Illustrative envelope within corridor95% radius · 7.3 m
Accuracy
Not measured
Integrity
Not evaluated
Confidence
95% assumed model
Latency / age
0 s simulated age
Model, provenance, and limits

This is a deterministic interface test bench, not a sensor feed. For an isotropic 2D Gaussian, the assumed radial coverage is r95 = √(−2 ln 0.05) × σ. The toy scenario uses σ = base uncertainty + age × an illustrative source coefficient. Coefficients are authored test controls, not measured GNSS, visual, or inertial performance. A ±20 m corridor is illustrative. A positional confidence envelope is not an integrity protection level. No safety authority or hardware actuation is granted.

Research record

From question
to evidence.

01 / Question
What must an answer to “Where am I, and can I trust this?” carry across human, agent, and machine surfaces?
02 / Hypothesis
A shared, typed evidence envelope may reduce ambiguity across different requestors.
03 / Method & prototype
Express the same synthetic state as a visual view and structured responses. Validate units, frames, timestamps, provenance, missing values, and an explicit authority boundary. The shared synthetic test bench is an interaction prototype; completing the proposed study requires task design, participant recruitment where relevant, and recorded evaluation.
04 / Observation
Evaluation pending. No participant-study results or field-performance findings are reported in this initial protocol.
05 / Measures
Schema validity, preserved semantics, ambiguous-field count, and handling of stale or missing evidence.
06 / Systems implication
Candidate: adapt presentation while preserving the evidence contract. App, API, MCP, and MHS are surfaces under study, not a claim of released integrations. Promotion depends on evidence of improvement against the baseline, with failure cases and limitations recorded.