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What the picker changes
  • Top topics digest — the cards score the selected period against the prior 4 weeks.
  • 12-week heatmap & outlet matrix — show the 12 weeks ending at the selected week (they slide back with the picker, they aren’t a fixed snapshot).
  • Per-topic volume / alias drift — same 12-week trailing window, anchored on the selected period.
  • Coverage gap quadrant — scores the selected period against the 12 weeks before it (not including it).
  • Anomaly cards — only show alerts the detector fired during the selected period. Quiet weeks legitimately show none.
What stays as-is
  • Outlet orientation strip / lean colours — context-only, drawn from the last 12 weeks of activity regardless.
  • Co-occurrence graph — recent-activity anchored, not picker-driven.
  • Source & topic profiles — all-time data for the topic; the picker doesn’t affect them.
Rolling 7 days is a sliding live window for “current vibes”; switch to Weekly to compare specific weeks side-by-side.
Weekly Rolling 7 days
live window
Topic · social

Historical Infrastructure Failure

19 posts · 1,436 engagement · first seen 24 Mar 2022 · last seen 11 Jun 2026

The post highlights how the cessation of rail services in towns like Helensville, Amokura, and Croydon Road led to their decline and abandonment, emphasizing the consequences of infrastructure neglect.

Stance breakdown

How the per-edge framings classify across 17 classified edges. Each framing is labelled by a small AI stance classifier; see the methodology page for details.

94%
Critical 16 Neutral / explainer 1

Sentiment breakdown

Whole-post emotional valence across 17 classified posts that reference this topic. Distinct from stance: a post can be supportive of the topic and still negative in tone (an angry supporter) — the two together capture the texture short-form posts compress into very few words.

35%
65%
Neutral 6 Negative 11

Platform mix

Where the conversation is happening. Engagement is volume-weighted (likes + 2×shares + 3×replies); a small number of high-impact posts can outrank a high-volume but low-engagement platform.

  • reddit
    4 posts · 708 engagement
    708
  • facebook
    4 posts · 692 engagement
    692
  • youtube
    9 posts · 32 engagement
    32

Top posts by engagement

The most-engaged posts referencing this topic. Engagement is likes + 2×shares + 3×replies; the order matches the digest ranking on /social.