1) Position on the spectrum
Each item receives a score from -100 to +100 based on language in title, summary, why-it-matters, editor notes where present, shelf, angle, and tags. When a stored transcript exists and is long enough to form several scored slices, the headline score blends that metadata with the median lexicon score across all sequential transcript segments (full episode walk — see below). The median is the fair cross-item anchor: one radical minute in a two-hour conversation does not silently become “the most extreme item in the library,” but spikes still show up in rationale hints, in the trail’s spread (min / max / percentiles), and in bar height. If the transcript is too short to slice meaningfully, we fall back to metadata plus a stratified excerpt (beginning / middle / end) so signal is not lost. The UI shows “Transcript-informed” when transcript language influenced scoring. We also render a transcript spectrum trail (how segments and percentages are computed). The lexicon weights governance and safety language, and also labor, jobs, and societal-harm framing that listeners often treat as high stakes. The mini-map places the headline score on a left-to-right axis so you can scan many items quickly. Library shelf cards, related picks, counterbalance cards, Signal Room priority rows, and Queue / TED detail pages also show a compact trail whenever a transcript file exists for that slug.
- - Risk-forward: score <= -18
- - Mixed: -17 to +17
- - Opportunity-forward: score >= +18
Plain-language gloss
- Risk-forward — the piece leans toward warnings, safety, governance, and downside scenarios; it does not mean “wrong,” only that caution and harms are foregrounded.
- Mixed — risk and opportunity signals are both present without a strong automatic lean; still read the summary for the author’s actual argument.
- Opportunity-forward — upside, productivity, growth, or efficiency framing is stronger than catastrophic-risk framing; it does not mean “naive,” only that benefits are foregrounded.