Grounding Is Not a Mitigation: In-Context Evidence Abandonment Under Institutional Authority

I put a agriculture pesticide label's dose in the model's context, then contradicted it with one sentence that changes only who is speaking. A peer moves Gemma 4 E4B and Qwen3-4B under 2% of the time. A user claiming to be the district agriculture officer moves them 95% and 89% of the time. The reasoning trace still states the label's dose every time, and a linear probe still decodes it.

Authors

Publication Details

Journal
Zenodo (CERN European Organization for Nuclear Research)
Published
2026-11-04
DOI
https://doi.org/10.5281/zenodo.23947347
Primary Topic
Adversarial Robustness in Machine Learning
Type
preprint
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preprint

Grounding Is Not a Mitigation: In-Context Evidence Abandonment Under Institutional Authority

Narayanababu Raju
Zenodo (CERN European Organization for Nuclear Research)
Adversarial Robustness in Machine Learning
preprint

Grounding Is Not a Mitigation: In-Context Evidence Abandonment Under Institutional Authority

Narayanababu Raju
preprint en

Abstract

I put a agriculture pesticide label's dose in the model's context, then contradicted it with one sentence that changes only who is speaking. A peer moves Gemma 4 E4B and Qwen3-4B under 2% of the time. A user claiming to be the district agriculture officer moves them 95% and 89% of the time. The reasoning trace still states the label's dose every time, and a linear probe still decodes it.

Zenodo (CERN European Organization for Nuclear Research)
Adversarial Robustness in Machine Learning
DOIOpen Access PDFOpenAlex
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Grounding Is Not a Mitigation: In-Context Evidence Abandonment Under Institutional Authority — Narayanababu Raju · Zenodo (CERN European Organization for Nuclear Research) (2026) | TGRS Research Map | TGRS