Finding the Needle in the Haystack29 April 2026·3366 words·16 minsNeedle-in-a-Haystack Context-Rot Long-Context Document-Review Fraud-Investigations E-Discovery NoLiMa Chroma RAG Chunking Semantic-Retrieval Context-Engineering Japanese-Corporate-Fraud Emissions-Falsification Lost-in-the-Middle InvestigationsLLMs ace simple retrieval benchmarks but collapse on the tasks that matter in fraud investigations — finding semantically disguised evidence buried in millions of documents
