Appreciate the feedback. Whether or not a model’s summary represents the underlying text is absolutely something we all have to pay careful attention to as these things improve. One thing we’ve seen work well is systems that always link back to the source so you can see the content that underlied the synthesis. Not a full solution, but important to keep that provanance.
I'll update the UI so the reader can listen to each chapter by themselves and add a disclaimer that these summaries are AI generated and may lack context or be false.