[yesenadam]

> What is "clear promise about what the reader will get out of it" in "Billion Dollar Muslim"?

Uh, it promises to explain Why We Need Spiritually Inspired Entrepreneurs.

I don't think the book needs to appeal to you to count as a clear promise the reader will get something out of it! You could object in the same way to a book called "How to Draw in Charcoal", how "Frankly, based on the title I don't see why I should read it".

[strken]

There isn't a book out there that doesn't promise to show its contents to the reader. If we're dividing books into those with a clear promise vs those which are broadly about an area, compare and contrast "How to Draw in Charcoal" with "Thousand Dollar Artist: Why We Need Charcoal Drawings".

[yesenadam]

> There isn't a book out there that doesn't promise to show its contents to the reader.

I think I don't understand that, but it seems massively wrong (e.g. my favourite book is called Essays) and I have no idea what you were trying to communicate. I can't see what exactly I'm supposed to do with the second sentence either. Sorry.