The trend is the hero. Watch a field's discourse swell and drain across time — then scrub to any instant and pull out the weighted graph as it stood that day.
Each band is a sub-theme. Its thickness is its weight that month — source authority × recency × corroboration. Drag anywhere on the river to scrub.
The weighted graph, sliced from the river at the scrubber. Node size = weight · lines = shared sources. Hover a node for its weight math.
A widely-shared Abeba Birhane talk — memorization as non-consensual recall — landed mid-June. The agent pulled it in, re-scored the graph, and the Privacy & memorization stream jumped. Machine unlearning rose with it.
Talk to the river. It narrows the streams and re-slices the graph.