Scan for multi-attester disagreement
emem_memory_contradictionsReveal where independent sources contradict each other on the same fact, complete with severity scores and citations, to audit contested claims before relying on them.
Instructions
Surface where the corpus DISAGREES with itself (algebra: competing evidence). When two or more independent sources signed different values for the same place + band + time, this returns that disagreement with a 0–1 severity score and citations to every disputed fact, instead of silently picking one value and hiding the conflict. The opposite of a confident single answer: it tells you when not to trust one. Read the SCOPE before quoting a zero: by default this asks only whether two DISTINCT attesters disagree, so one responder answering an address from two different upstreams is not counted until you pass include_same_attester_sources: true.
When to use: Call this when trust matters before you rely on a number, 'is there disagreement about X', 'do the sources corroborate this', 'audit this claim', or 'find contradictory observations in region Y'. Use it to decide whether a fact is well-corroborated or contested. Narrow with cell_prefix (e.g. "defi.zb5") for a region and band for one family; min_severity filters out trivial differences. Severity is per band kind: scalar = spread over the band's range, vector = 1 − mean cosine, categorical = 1 − mode share. On a single-responder deployment add include_same_attester_sources: true: the likeliest real disagreement there is one signer answering from two different providers, and the default scope cannot report it. Each record names its disagreement_scope — multi_attester is two witnesses, same_attester_provider_substitution is one witness that changed instruments. The receipt cites every disputed CID, follow up with emem_diff to quantify a pair, or (with the refinement loop on) read the emitted disagrees_with edge via emem_edges_recall.
Example arguments: {"cell_prefix":"damO","band":"indices.ndvi","min_severity":0.2}
Input Schema
| Name | Required | Description | Default |
|---|---|---|---|
| band | No | Band key filter (e.g. `indices.ndvi`). Omit to include all bands. | |
| limit | No | Max contradictions to return. | |
| cell_prefix | No | Bytewise prefix on cell64 (e.g. `defi.zb5f9`). Omit to scan the whole corpus up to the scan cap. | |
| min_severity | No | Severity floor in [0, 1]. 0 = report every disagreement, 1 = only flagrant. Severity scoring is per band kind: scalar (max-min over band range), vector (1 - mean cosine), categorical (1 - mode share). | |
| window_unix_s | No | [lo, hi] inclusive Unix-seconds filter on attestations' signed_at, all disagreeing attestations must fall in the window. | |
| include_same_attester_sources | No | Also report keys where ONE attester answered the same address from two different upstreams. Default false, which scans only for disagreement between two or more DISTINCT attesters — so on a single-responder corpus a zero here means the narrower question was answered, not that nothing disagrees. Set true and a key qualifies when the facts differ in `derivation.fn_key` or in their `sources[].scheme` set; the same provider re-signed is a refresh, not a disagreement, and stays excluded. Each record carries `disagreement_scope` and a `providers[]` list naming what changed. |