Opportunity ledger / Dossier O-0199
Recurring need documented in 3 independent public source items.
First seen 2026-07-14 · Last updated 2026-07-14 · Recalculated daily
Trend factor ×1.0, capped at 2.0.
每个笔记本能添加的来源数量有限制。笔记本的数量有限制。来源不能超过50万个词,也不能超过200MB。 Chinese research excerpt
Use the source link for the original-language context.
每个笔记本能添加的来源数量有限制。笔记本的数量有限制。来源不能超过50万个词,也不能超过200MB。 Chinese research excerpt
Use the source link for the original-language context.
Follow the full evidence chain
Traceable items · inspectable scoring · warming and payment alerts
Scoring summary
Evidence confidence = strength × evidence volume × source diversity × payment × competition × trend × 10. Counts use independent content items; only first-hand pain, current spend, explicit willingness to pay and concrete feature requests affect the score. Repeated posts by one author are discounted. Scoring and status changes follow deterministic rules.
“Evidence-backed” means the problem appears real, recurring and connected to spending. It does not mean the business is worth building. Read the full methodology.