The landscape showed all 264 episodes frozen in place. Now we add time.
When we traced how these twelve themes rise and fall across 264 episodes, six patterns stood out. The first three are the dominant arcs, three thematic trajectories so dramatic they define the shape of the series. The rest are subtler: patterns visible only when you look across the full twelve-theme landscape.
The Three Arcs
The Pandemic Arc. COVID-19 surges in 2020, dominates the conversation for two years, then gradually fades but never quite disappears. Nineteen of the first 41 episodes have Pandemic Response in their top three themes; by 2025, only 4 of 38 do. The pandemic didn't just fade. Its concerns were absorbed into deeper questions about transformation, equity, and systemic change.
The AI Arc. Nearly a mirror image of the pandemic, and even more dramatic. AI scores dead last in 2020, with just a single episode featuring it prominently. By 2025, it appears in the top three of 24 out of 38 episodes, nearly two out of every three conversations. A generational technology shift, visible in real time.
The Equity Arc. A different kind of story. It doesn't spike or crash. It endures, running as a steady undercurrent across all six years. The crisis changed; the concern for equity didn't.
Three More Patterns
But the three arcs don't tell the whole story. Three more patterns emerge when you look beyond the headline themes.
The Crisis Handoff. Between the pandemic's fade and AI's rise, something unexpected fills the gap. In 2023, Crisis & Conflict becomes the dominant theme in the data, the only year where neither pandemic nor AI leads. Ukraine, Gaza, political upheaval: the world didn't stop being in crisis, the crisis just changed shape.
The Technology Caution. As AI rises, so does the theme we call Tech as Enabler, the persistent philosophical insistence that technology creates possibility but doesn't transform education on its own. This caution more than triples in prominence from 2020 to 2026, rising in lockstep with AI enthusiasm. The SLL conversation never lets technology hype go unchecked.
What Fades. The most provocative finding may be what the data shows declining. Open & Digital Learning, Reimagining Systems, and Innovation Ground Up all trend downward over six years. The early-pandemic energy around systemic transformation, new models, open platforms, grassroots reinvention, gradually gives way to the AI conversation. Did the field lose its appetite for structural change, or did AI absorb that energy into a new framing? The data raises the question but doesn't answer it.
Explore the Streamgraph
These are the patterns we see. Now it's your turn. Select themes below to watch them rise and fall across six years. Scroll through time, hover over the dots to see individual episodes, and see what patterns you notice.
How to explore
Select one or more themes to trace their presence across six years. Hover over the dots to see individual episodes.