Yep. Been there. Built the rerankers, stacked the re-chunkers, tweaked the embed dimensions like a possessed oracle. Still watched the model hallucinate a refe

Yep. Been there. Built the rerankers, stacked the re-chunkers, tweaked the embed dimensions like a possessed oracle. Still watched the model hallucinate a reference from the correct document — but to the wrong sentence. Or answer logically, then silently veer into nonsense like it ran out of reasoning budget mid-thought. No errors. No exceptions. Just that creeping, existential “is it me or the model?” moment. What you wrote about interpretation collapse and memory drift? Exactly the kind of failure that doesn’t crash the pipeline — it just corrodes the answer quality until nobody trusts it anymore. Honestly, I didn’t know I needed names for these issues until I read this post. Just having the taxonomy makes them feel real enough to debug. Major kudos.