Scaffold. Structure only. The blocks below show where text and panels alternate; the copy is placeholder describing what belongs in each slot.
In 325 the church split over a single Greek iota. Theophilus thinks that is ridiculous. Hannah is about to explain why it wasn't.
[Opening block: set the scene. Who is in the room, what year, what is actually at stake for an ordinary person.]
[Second block: the substance. What the two words meant, and why the difference was not trivial.]
[Closing block: what was decided, and what it cost. An explainer may conclude — unlike a Conversation.]