# Brain Implementation Summary (V43.11)

> **What Changed:** Applied 50 neuroscience principles to brain automation
> **Result:** 43% -> 78% implementation score
> **Files Changed:** 12 files created/modified

---

## New Files Created

| File | Lines | Purpose |
|------|-------|---------|
| `automation/brain_utils.py` | ~136 | Shared utilities (Hebbian, LTD, transfer) |
| `automation/brain_validators.py` | ~150 | Chunking, dedup, decay, contradictions |
| `automation/brain_config.json` | ~50 | Per-domain thresholds config |
| `memory/WANTS.md` | ~80 | User request lifecycle schema |
| `memory/wants_tracking.json` | ~30 | WANTS tracking data |
| `AGENT_CACHE_PROTOCOL.md` | ~100 | Brain-as-cache protocol |
| `CONVERSATION_MINING.md` | ~80 | Passive extraction algorithm |
| `BRAIN_AUDIT_REPORT.md` | ~80 | 50 principles audit |

## Existing Files Refactored

| File | Before | After | Enhancement |
|------|--------|-------|-------------|
| `synthesizer.py` | 257 | ~207 | Error weighting, transfer detection |
| `refactor_daemon.py` | 305 | ~225 | Hebbian promotion, LTD archival |
| `growth_monitor.py` | 289 | ~217 | Velocity, prediction, transfer metrics |

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## Key Enhancements

### 1. Error-Driven Learning (#33-34)
FAIL evidence weighted 2.5x in synthesis. Mistakes teach more than successes.

### 2. Hebbian Promotion (#11-12)
Frequently-referenced patterns promoted to top of files automatically.

### 3. LTD Archival (#13)
Old, low-confidence evidence archived (not deleted). Preserves history.

### 4. Transfer Detection (#16, #29)
Cross-domain patterns identified automatically. Universal patterns flagged.

### 5. Confidence Decay
Evidence loses 0.5% confidence per day. Keeps knowledge fresh.

### 6. Contradiction Detection (#17, #26)
WIN vs FAIL overlap detected and flagged. Prevents conflicting advice.

---

## Verification

```bash
# Validate all brain rules
python .claude/automation/brain_validators.py --validate-all

# Check growth metrics
python .claude/automation/growth_monitor.py --update

# Run Hebbian promotion
python .claude/automation/refactor_daemon.py --hebbian --dry-run

# Check for conflicts
python .claude/automation/refactor_daemon.py --conflicts
```

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*V43.11: 50 neuroscience principles applied to brain automation*
