I'd like to start a book with a sentence like this:
This book is about X, so why should it start with Y?
In fact, the book is already written, but I'd like to get the first few pages absolutely right. In the text, I tried to keep the language simple, but I didn't feel too comfortable with contractions so I didn't use them.
My question is whether the sentence is grammatically correct, and if it could be improved in some way to make it sound more natural to native speakers.
Here are some other sentences that I can think of:
- This book is about X. Then why should it start with Y?
- If this book is about X, why should it start with Y?
- This book is about X. Then why should we start with a discussion on Y?
- This book is about X. Then why does it need a chapter about Y?
Is any of the above forms better than the original sentence? Or is there a better sentence with the same meaning?