L1 · The cellWelcome screen
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L2 · Closer to formal
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L3 · The sourceAcademic citation
The Scientific background cell, redesigned as a three-layer progressive-disclosure chain instead of a bounce to a generic essay. L1 (the cell): a concrete example of a real autotag + one plain sentence + a link. L2 (linked section): the closer-to-formal description — a whole code group, or the method. L3: the full citation + an honest link to a free copy where one exists.
What to eyeball: does Cell 2 stay short-and-snappy and fit the fixed cell without overflow across all four palette × appearance combos and all three concepts? Does the chain read as tied together rather than a bounce? Concept C (Emergent themes) deliberately stress-tests the "example" pattern — it is a grouping, not a single tag.