If a book had a decent number of diagrams and charts, would you want the audio version or would you want the physical/ebook (visual version)?
Secondary question- if those charts and diagrams are desc...
Both. I think that people that listen will not then look at a PDF but might buy the book separately and look at them then. Two entirely different media. I did this with Ray Dalios latest. Would talk more to the graphs principles on the audio version.