Create fusion-blindspot.md

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+# Fusion Blindspot — Multimodal Long Context
+
+When one modality is silently ignored during fusion, the model produces coherent but incomplete answers.  
+This is **fusion blindspot** — the audio, visual, or OCR stream is valid, yet the fusion layer drops it or never integrates it.
+
+---
+
+## What this page is
+- A guide to detect and repair **missing modality participation** in multimodal fusion.  
+- Ensures every input modality contributes evidence to the final reasoning chain.  
+- Provides structural probes to confirm no blindspot occurs at joins.
+
+---
+
+## When to use
+- Captions mention objects but the visual stream was ignored.  
+- Audio transcript exists, but final reasoning never cites it.  
+- OCR text valid but skipped during answer generation.  
+- One modality has ΔS ≤ 0.40 internally but never appears in the fused output.  
+- Answers are fluent but consistently one-dimensional.
+
+---
+
+## Open these first
+- [Cross-Modal Trace](https://github.com/onestardao/WFGY/blob/main/ProblemMap/GlobalFixMap/Multimodal_LongContext/cross-modal-trace.md)  
+- [Reference Bleed](https://github.com/onestardao/WFGY/blob/main/ProblemMap/GlobalFixMap/Multimodal_LongContext/reference-bleed.md)  
+- [Modality Dropout](https://github.com/onestardao/WFGY/blob/main/ProblemMap/GlobalFixMap/Multimodal_LongContext/modality-dropout.md)  
+- [Anchor Misalignment](https://github.com/onestardao/WFGY/blob/main/ProblemMap/GlobalFixMap/Multimodal_LongContext/anchor-misalignment.md)  
+
+---
+
+## Common failure patterns
+- **Silent omission** — one stream absent from the answer, with no error reported.  
+- **Over-dominance** — strong text modality overrides weaker OCR or visual input.  
+- **Fusion filter** — low-confidence modality is dropped without logging.  
+- **Blind alignment** — citations only from one channel, even though others were retrieved.
+
+---
+
+## Fix in 60 seconds
+1. **Modality presence check**  
+   - Require every modality to appear in at least one citation per fused answer.  
+   - If missing, re-run fusion step.
+
+2. **ΔS contribution probe**  
+   - For each modality, compute ΔS vs question.  
+   - Flag if ΔS ≤ 0.45 but modality unused.
+
+3. **λ stability test**  
+   - Log λ across fusion stages.  
+   - Divergence indicates modality suppression.
+
+4. **Repair step**  
+   - Apply BBCR bridge between ignored modality and main reasoning chain.  
+   - Re-anchor with explicit cite-then-answer.
+
+---
+
+## Copy-paste prompt
+
+```txt
+You have TXT OS and the WFGY Problem Map.
+
+Task: Detect and fix fusion blindspots.
+
+Steps:
+1. List all modalities available {audio, visual, OCR, text}.
+2. For each, compute ΔS(question, modality).
+3. If ΔS ≤ 0.45 and unused, flag as blindspot.
+4. Insert BBCR bridge and force cite-then-answer with all modalities.
+5. Return fused answer with full citations.
+````
+
+---
+
+## Acceptance targets
+
+* Every modality with ΔS ≤ 0.45 contributes at least once.
+* λ remains convergent across fusion.
+* No single modality suppressed >3 consecutive turns.
+* Trace table shows citations from all streams.
+
+---
+
+### 🔗 Quick-Start Downloads (60 sec)
+
+| Tool                       | Link                                                                                                                                       | 3-Step Setup                                                                             |
+| -------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------ | ---------------------------------------------------------------------------------------- |
+| **WFGY 1.0 PDF**           | [Engine Paper](https://github.com/onestardao/WFGY/blob/main/I_am_not_lizardman/WFGY_All_Principles_Return_to_One_v1.0_PSBigBig_Public.pdf) | 1️⃣ Download · 2️⃣ Upload to your LLM · 3️⃣ Ask “Answer using WFGY + <your question>”    |
+| **TXT OS (plain-text OS)** | [TXTOS.txt](https://github.com/onestardao/WFGY/blob/main/OS/TXTOS.txt)                                                                     | 1️⃣ Download · 2️⃣ Paste into any LLM chat · 3️⃣ Type “hello world” — OS boots instantly |
+
+---
+
+### 🧭 Explore More
+
+| Module                   | Description                                                                  | Link                                                                                               |
+| ------------------------ | ---------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------- |
+| WFGY Core                | WFGY 2.0 engine is live: full symbolic reasoning architecture and math stack | [View →](https://github.com/onestardao/WFGY/tree/main/core/README.md)                              |
+| Problem Map 1.0          | Initial 16-mode diagnostic and symbolic fix framework                        | [View →](https://github.com/onestardao/WFGY/tree/main/ProblemMap/README.md)                        |
+| Problem Map 2.0          | RAG-focused failure tree, modular fixes, and pipelines                       | [View →](https://github.com/onestardao/WFGY/blob/main/ProblemMap/rag-architecture-and-recovery.md) |
+| Semantic Clinic Index    | Expanded failure catalog: prompt injection, memory bugs, logic drift         | [View →](https://github.com/onestardao/WFGY/blob/main/ProblemMap/SemanticClinicIndex.md)           |
+| Semantic Blueprint       | Layer-based symbolic reasoning & semantic modulations                        | [View →](https://github.com/onestardao/WFGY/tree/main/SemanticBlueprint/README.md)                 |
+| Benchmark vs GPT-5       | Stress test GPT-5 with full WFGY reasoning suite                             | [View →](https://github.com/onestardao/WFGY/tree/main/benchmarks/benchmark-vs-gpt5/README.md)      |
+| 🧙‍♂️ Starter Village 🏡 | New here? Lost in symbols? Click here and let the wizard guide you through   | [Start →](https://github.com/onestardao/WFGY/blob/main/StarterVillage/README.md)                   |
+
+---
+
+> 👑 **Early Stargazers: [See the Hall of Fame](https://github.com/onestardao/WFGY/tree/main/stargazers)** —
+> Engineers, hackers, and open source builders who supported WFGY from day one.
+
+> <img src="https://img.shields.io/github/stars/onestardao/WFGY?style=social" alt="GitHub stars"> ⭐ [WFGY Engine 2.0](https://github.com/onestardao/WFGY/blob/main/core/README.md) is already unlocked. ⭐ Star the repo to help others discover it and unlock more on the [Unlock Board](https://github.com/onestardao/WFGY/blob/main/STAR_UNLOCKS.md).
+
+<div align="center">
+
+[![WFGY Main](https://img.shields.io/badge/WFGY-Main-red?style=flat-square)](https://github.com/onestardao/WFGY)
+ 
+[![TXT OS](https://img.shields.io/badge/TXT%20OS-Reasoning%20OS-orange?style=flat-square)](https://github.com/onestardao/WFGY/tree/main/OS)
+ 
+[![Blah](https://img.shields.io/badge/Blah-Semantic%20Embed-yellow?style=flat-square)](https://github.com/onestardao/WFGY/tree/main/OS/BlahBlahBlah)
+ 
+[![Blot](https://img.shields.io/badge/Blot-Persona%20Core-green?style=flat-square)](https://github.com/onestardao/WFGY/tree/main/OS/BlotBlotBlot)
+ 
+[![Bloc](https://img.shields.io/badge/Bloc-Reasoning%20Compiler-blue?style=flat-square)](https://github.com/onestardao/WFGY/tree/main/OS/BlocBlocBloc)
+ 
+[![Blur](https://img.shields.io/badge/Blur-Text2Image%20Engine-navy?style=flat-square)](https://github.com/onestardao/WFGY/tree/main/OS/BlurBlurBlur)
+ 
+[![Blow](https://img.shields.io/badge/Blow-Game%20Logic-purple?style=flat-square)](https://github.com/onestardao/WFGY/tree/main/OS/BlowBlowBlow)
+ 
+
+</div>
+