Lesson 3: Summarising long email threads for Rosa
47 min read·14 Oct 2026
Module 8 · Lesson 3 · About 55 minutes · Needs: basic Python; Module 6 Lesson 3 (sentence embeddings) helps; Module 7 (transformers) helps but is not required
The situation
It is Wednesday 28 October 2026, project week 8. Rosa does not read long threads; she reads the first lines and the last. She has asked for a summary of every long thread on her Monday list, three sentences at most, and she wants to trust every fact in it.
The running example is TH01, Mrs Joan Hartley's thread about her Volt 2 battery (simulated): 11 emails from 10 June to 19 July 2026, three chases, each angrier than the last, and an apology from Rosa. Ines wrote a reference summary by hand.