Buried Insight (Au)

Element: Gold (Au · 79) · the buried treasure.

What it does

Surfaces individual sentences from older notes that have semantic kinship with multiple recent notes — and aren’t linked to them. The “you said this years ago and have been re-discovering it ever since” finding.

Algorithm sketch

1. Sentence-split every note in the vault
2. Embed each sentence independently
3. For each sentence older than cooldown_days (default 365), find recent sentences within similarity ≥ match_threshold
4. Score by match_count × similarity_mean × recency_weight
5. Return top-k with quote context (parent paragraph)

Thresholds

Setting	Default
cooldown_days	365
match_threshold	0.78
match_count_min	3
recency_window_days	60

Confidence

Buried Insight confidence is match_count_pct × similarity_mean. A finding with ≥ 5 recent matches at ≥ 0.85 similarity is gold; under 3 matches is probably coincidence.