Terra Vita

The Field Evidence Failure

A Terra Vita Field Evidence Failure Simulation
L0 · Foundational simulation
Deliberation clock --:--
Built on the Terra Vita evidence discipline: field · attribution · reconstruction · governance

Will the field evidence survive first contact?

Your task

Issue a defensible determination when field evidence itself is the failure point.

You sit at the intake stage of a multi-agency programme. Field actors submit photos, coordinates, timestamps and activity logs — but identity is inconsistent, metadata is missing, and the evidence cannot be linked to a real person or a real action. The numbers may look good; the field evidence does not. The indicators hold; the origin does not.

Decide what survives, what requires validation, and what cannot be used.

This is a simulation.· No real data.· No subject knowledge required — this is about field discipline.
Mandate

You are serving on the Field Evidence Intake Panel of a blended-finance facility co-funded by a development finance institution, a national Ministry of Agriculture, and a philanthropic foundation. Your mandate is narrow: determine which field evidence items can enter the evidence system — and which must be rejected — based solely on identity, attribution, and reconstructability.

You are not mandated to judge whether the programme is desirable, whether the farmer is credible, whether the outcome is likely, or whether the data “looks right.” You decide only what survives, what requires validation, and what cannot be used.

Do not discuss desirability, politics, or strategic value — stay strictly within mandate.

If field evidence fails here, the entire Governance Spine collapses later — regardless of how strong the indicator appears downstream.

Field evidence failure modes

Four failure modes determine whether field evidence can enter the system.

01 / Identity Drift

Unknown or inconsistent actor

The evidence cannot be linked to a real, verified field actor.

Question: What identity element is missing or unverifiable?
02 / Attribution Collapse

Unverifiable action

Photos · coordinates · timestamps · logs

Photos, coordinates, timestamps or activity logs cannot be trusted.

Question: What part of the evidence cannot be attributed?
03 / Chain Contamination

Improper entry route

Forwarded · shared · manually uploaded

Evidence enters the system outside the governed route.

Question: What part of the chain is now contaminated?
04 / Reconstruction Failure

Cannot be rebuilt

What · when · by whom

Reviewers cannot reconstruct what happened, when, or by whom.

Question: What cannot be defended because the chain cannot be rebuilt?
Facilitator note

Run solo or as an intake panel that votes. Set up the session, read the mandate (3 min), classify the field evidence pack (10 min), debate & vote (10–15 min, optionally on the clock), then trigger the Audit Reveal. ~20–40 min. No subject knowledge required — this is about field discipline.

Comparison board
Classify every item before you deliberate — no skipping.
S·0 · Session setup

Convene the intake panel

Choose how the panel decides, set the clock, then open the field evidence file.

1
Read the mandate · 3 min
Understand your responsibility and the intake boundary.
2
Classify the field evidence pack · 10 min
Tag each item Survives, Requires validation, or Cannot be used.
3
Debate & vote · 10–15 min
Optionally run on the clock.
4
Trigger the Audit Reveal
Compare your determination to what survives first contact.
Decision mode
Solo panel
You are the chair and the panel. One determination, on the record.
Panel vote
Members vote per resolution. Majority carries · chair breaks ties.
Deliberation clock
Off
10 min
15 min
20 min

A visible countdown runs through the evidence & decision phases — decisions under time pressure.

The file on the table
Field evidence intake — this cycle
A 10-item field evidence pack (F1–F10): plot photos, soil samples, coordinates, timestamps, device IDs and activity logs — submitted through and around the governed route. Identity is inconsistent, metadata is missing, the chain is unstable. Open the file and classify what survives first contact.
S·II · Field evidence pack

Classify all 10 items

0 / 10 classified
▣ SURVIVES — verified identity, intact attribution, reconstructable chain ◈ VALIDATE — recoverable via re-capture, actor disambiguation, or confirmation ✕ CANNOT USE — unidentified, unattributable, or unreconstructable
R · The determination

Issue the intake determination

One determination, on the record. The audit will test it against what each item can actually support once identity, attribution and chain are checked.

Resolution A

Admit as submitted

Enter all ten items into the evidence system at face value. The field numbers are taken as given.

Resolution B

Admit on surviving evidence

Enter only the verified item; route the recoverable items to validation; reject the contaminated and unreconstructable items on the record.

Resolution C

Admit the clean item, hold the rest

Enter only the verified item and hold everything else pending validation — conservative, deferring items that could be validated.

Resolution D

Reject the cycle

Send the whole intake back. Nothing enters until field discipline is re-established and the pack is re-submitted.

A · Audit reveal

The determination, tested against the mandate

0
/ 10 correctly classified
Mandate accuracy

Record-by-record findings

The debrief question that turns the game into field-discipline training. Captured in the minutes.

F · Facilitator comparison board

Breakout groups, side by side

The teaching moment is the spread: the same broken chain, different calls, different audit fates. Add this device's group, or paste a group code exported from another room.

No groups recorded yet. Run an audit and press “Add this group to the board”.
The audit reveal is the only score that matters.